I do have an "I'm Not Dead Yet" t-shirt.
Generally, though, slogan t-shirts are bollocks.
( Davros' Granddad a voice of calm reason in a world of spastics., Wed 26 Oct 2011, 14:27, 2 replies, latest was 14 years ago)

I've got one which has served me well that says "WILL FUCK FOR COKE"
I say it served me well, a girl bought me a coke once while I was wearing it.

I am 100% convinced she was not winding me up.
(Darth Foxtrot A one-man army dedicated to making fetch happen, Wed 26 Oct 2011, 14:29, Reply)

Actually, I might try "Will work for cash".

( Davros' Granddad a voice of calm reason in a world of spastics., Wed 26 Oct 2011, 14:33, Reply)

cash coal and some out of date roll mops
( Naked Ape call me Caitlyn, Wed 26 Oct 2011, 14:43, Reply)

I like the "Get Fish or Die Tryin'" T-shirt I saw on teh Daily Mash site.
It had a picture of an otter on it.

I also like my "I have no interest in your worthless and ill informed opinions" shirt, but I feel a bit rude wearing it.
(Bazongaloid, Wed 26 Oct 2011, 14:30, Reply)

I'd pay money to watch Paxman on Newsnight wearing that T-shirt.

( scarpe We Stole Bikes, Wed 26 Oct 2011, 14:33, Reply)

I'd pay money to see Paxman eating Paxo whilst playing Pacman on Newsnight

( Naked Ape call me Caitlyn, Wed 26 Oct 2011, 14:42, Reply)

While talking to the taxman?

( tangledupinblue hairy badge with moving eyes, Wed 26 Oct 2011, 14:45, Reply)

I was about to go for 'while interviewing Pacco Rabanne'

( scarpe We Stole Bikes, Wed 26 Oct 2011, 14:51, Reply)

Aw that's lax, man

( tangledupinblue hairy badge with moving eyes, Wed 26 Oct 2011, 14:56, Reply)

While doing Dragnet impersinations.

( scarpe We Stole Bikes, Wed 26 Oct 2011, 15:00, Reply)

A friend of mine got one via the Mash site
Had a picture of Evel Knievel on it. Slogan; "Compared to him, we're ALL gay"
(Darth Foxtrot A one-man army dedicated to making fetch happen, Wed 26 Oct 2011, 14:42, Reply)

I got my brother the rather splendid
"Life is not a popularity contest"
"oh wait ... yes it is"
( the mighty badger Aphrodite, on a bar stool, by your side, Wed 26 Oct 2011, 15:02, Reply)