Railway related
Two stick in my mind.

1: The simple addition of the word "enough" after the placename Morden on nearly every London tube map on the northern line during the 80s

2: The simple addition of the word "Danno" after the placename Bookham on nearly every southwest train map during the early 90s.

Simple genius and the bookham one still makes me laugh.
( edz314 smelled the glove on, Fri 4 May 2007, 15:49, Reply)

Booze
Can't remember where I saw this one:

It's only binge drinking if you stop.
( abefroman skating on the thin life of modern life on, Fri 4 May 2007, 15:48, Reply)

rave on
on the toilet wall of a barcelona youth hostel in 1989 the war cries of every civil unrest in europe were dwarfed by the oversized scribing in thick black marker pen "Madchester. Rave on."
(chives, Fri 4 May 2007, 15:48, Reply)

This was seen on
the back of a chair on a train from stranraer to Edin-burger or somewhere like that can't remember the actually trip!
I thought it was a great tag:

(ALFIN Hasn't urinated since, Fri 4 May 2007, 15:45, Reply)

The classic
I was helping my mate move into his new flat the other day. He was on the top floor, so everything had to be taken up in the lift. As we were walking toward said lift, he told me: "Wait until you see what I've written on the wall in the lift"

So I did. Pressed the button for the lift. Ping. Door slides open to reveal a huge cock drawn on the rear wall. Not just a quick crude one, either. It took up most of the wall, and it appeared a great deal of effort had gone into making it look right. It was very symmetrical and had the complimentary pubes and everything. Classy.

Length? Nearly 6 or 7 foot.
(Icefox2k, Fri 4 May 2007, 15:44, Reply)

ERIC IS INNOCENT
I know this to be true, for it was written in various places around Crewe and Sandbach in the mid 1970s.

Including across the back of some bloke's donkey jacket.
(Juan Quar is clinging to her front teeth on, Fri 4 May 2007, 15:41, Reply)

Northern Ireland Graffiti
During the height of the troubles Ulster had these massive posters with the red hand of Ulster on them and written on them "ULSTER SAYS NO"

Underneath this, a brave soul has sprayed :

"But the man from Delmonte say Yes"
(Kage, Fri 4 May 2007, 15:39, Reply)

There's a road where I live called Rood Hill...
for many a year the sign read "Rod Hull" thanks to somebody who knew what white paint and marker pens were really made for.

Always made me smile...
(Ricalicious, Fri 4 May 2007, 15:38, Reply)

At the seaside, many years ago...
...when you had to put 2p into toilet doors to get inside....

someone had written...

'It's no use standing on the seat,
The crabs in here can jump six feet,
If you think thats rather high,
Try next door - the bastards fly!!!'

as I was only young at the time (8 or 9), it took a couple more years to realise they meant the other kind of crab - it was the seaside after all....
(Butthole Surfer : as felt up in Braille Weekly :D, Fri 4 May 2007, 15:37, Reply)

mudwig graffitti
There is another mudwig piece on a wall in stokes croft bristol which says mudwig hurt my quim.
(jonesy, Fri 4 May 2007, 15:33, Reply)

A room of our own
There is a little outbuilding at the front of my parents'house. They decided to turn it into a den/playroom for my younger sister and I. When it came down to decorating it, my cousin joined in and we decided to paint breasts and willies on all the walls. Needless to say that the room soon reversed to its original use of junk room.
On a recent visit, my young nephew and I were trying to rescue some old bike from the premises, and he asked about the decorating. Needles to say I handed him a paint brush, and he has now contributed to our chef d'oeuvre
(sandrine, Fri 4 May 2007, 15:32, Reply)

On the main roundabout entering Richmond, London,
and lasting untouched for very many years, some wag had written... 'Cats like plain crisps' in huge letters.

I saw this in two other locations during the 1980s and 90s. No idea what it meant.


Also, as a kid in the 70s, I used to see the word 'SHED' gaffitied around the local area. I though it was a really bad swear word and used it lots of times in arguments. "You shed!". I discovered, 20 years later, it was something to do with a gang of local football supporters (Brentford), and the 'Shed' was the end of the ground where they stood. Stupid shedding shedders.
( Zaphod's Wombat - Never did quite get the hang of, Fri 4 May 2007, 15:30, Reply)

Ipswich waterfront,
Pre-gentrified.

Heck of a labour of love...
(doran, Fri 4 May 2007, 15:26, Reply)

Meanwhile in Cambridge...
In a bookshop in Cambridge there was a very long line of erudite satire from different people, which didn't really interest me; but below one annoyed reader had written ``I fucking hate this intellectual graffiti'' the nice part was that someone had obligingly replied below ``Baz was here.''
(Junathan testing..., Fri 4 May 2007, 15:26, Reply)

a classic
one of those 'man digging'road signs, a speach bubble added, which reads,
'Effing Brollies'

simple, but funny.
(UnstableDan Bah, Humbug! ooooh, humbugs, nyom!, Fri 4 May 2007, 15:23, Reply)

On a college toilet door...
..as most graffiti seem to be.

"If you are reading this, you are shitting at a 45 degree angle"

To which someone, presumably a mathematician, had appended:

"Should be negative or -45 degrees"

Meh, first post.
(Le Misanthrope last procrastinated on, Fri 4 May 2007, 15:20, Reply)

On the empty car sales shop at Urmston Retail Park
Someone has written on the side of the building:

"Big French Willies"

I know not why
( groovegenerator The man who mistook his wife for his wife, Fri 4 May 2007, 15:19, Reply)

An old piece of graffiti on a wall in my home town
That has since faded with the passage of time.

It read 'Dirty Numb Angel meets Confusion the Waitress'.

I can't help but wonder how that meeting went.
(Generator cannot be named for legal reasons, Fri 4 May 2007, 15:18, Reply)

Irish white supremacists

QUOTE:
"'fuk off ye stupid fouriegn dogs' this was written on a wall where i used to catch the school bus. the dickheads had even gone to the trouble of creating a badly spray painted, backward swasticha in bright green paint. instead of being offended (i'm from nz), it actually made me laugh after what had been a really crappy day. Thank you rascist tards of Ireland :)"

Irish white supremacists are indeed a rich source of unintentional comedy gold.

I read the Irish section of Stormfront once (neo-Nazi web forum). It was full of complaints about English neo-Nazis. Apparently English neo-Nazis are bigoted against Irish neo-Nazis. Who'd have thought?
(apeloverage committed the vile act of onanism on, Fri 4 May 2007, 15:16, Reply)

beware of ramp
became beware of tramp. it was funny every time i saw it. i half expected a tramp to come running from behind the wall the sign was on. it was there for years!
( raver, Fri 4 May 2007, 15:15, Reply)

Mudwig
Just remembered this - the Mudwig ones around Bristol. Some of them may still be there - I'll see if I can get a photo.

Near Stokes Croft: "Mudwig ain't that flash".

On Park Row: "Mudwig is a twop".

In St Judes: "Mudwig popped the eyes!"

And somewhere else: "Mudwig at my shoe!" [Not "ate"; "at" !?]

Apparently Mudwig is some sort of graffiti artist.

Dr S
(Dr Skagra glorious glargzhem, Fri 4 May 2007, 15:12, Reply)

There's a communual area to my flats where the bins and stuff are
and the chavs who infest the area decided to add their names to it - probably about thirty scrawled signatures in all. Every day I'd come home past it and it always made me feel a bit depressed.

So one night I went out with a magic marker and a stool and wrote over the top (higher than they would be able to reach): "HILLDROP CRESCENT RETARDS CLUB - PLEASE SIGN YOUR NAME BELOW"

It lasted for ages, and then one day I came back to find that the word "RETARDS" had been scribbled out so hard it was completely illegible, so I wrote it in again, even higher than before.

The council painted over it a couple of weeks later.
( emvee cruor deo cruoris, Fri 4 May 2007, 15:08, Reply)

white vans.........
Except this one was yellow and some dumbass had written in the dirt 'also available in white'. He must've thought he was very clever for copying some graffiti he'd seen on a dirty white van.
(dogspoo, Fri 4 May 2007, 15:05, Reply)

Toilet door

All stools over 2 lb must be lowered by hand
(Xander, Fri 4 May 2007, 15:05, Reply)

Mudwig
Mudwig started appearing in Bristol a couple of years ago, or at least, that's when I noticed it.

Notable examples:

"Mudwig hurt me quim"

"Mudwig is a pettle"

I liked the second one so much I took a picture of it and put it on my phone. It's gone now...

Oh go on then...

Since Dr Skagra and http://www.b3ta.com/questions/graffiti/post78496/"jonesy have both mentioned it, here's the pic:

and by the same hand:

( IHaveABadFeelingAboutThis most likely working from home on, Fri 4 May 2007, 15:03, Reply)

Another one...I forget the location
"Work is the curse of the drinking classes"
(Reverend Fister "a disciplined fuckwit", Fri 4 May 2007, 15:01, Reply)

Piccadilly Gardens, Manchester
Some people may remember the little gem that was painted footsteps going from the statue of Queen Victoria, to the toilets over near burger king and back again.

Oh how I laughed. If only I had a picture.
( SpikeyPickle wishes he was mabazaritchie, Fri 4 May 2007, 15:00, Reply)

Best Graffiti Ever
At uni in the physics building written above the toilet roll holder "Art degrees please take one"

In Sydney Australia
"Reality is an illusion created by a lack of drugs"
(butterworthrj, Fri 4 May 2007, 14:55, Reply)

Grassy Knoll
On a wall on the infamous grassy knoll nr. Dealey Plaza, Dallas: "Elvis killed JFK"
(ring-finger is also a verb, Fri 4 May 2007, 14:55, Reply)