Old People
I'm sure this will have been mentioned already.

But I am sick and 'effing tired of old people continually moaning about young people having no manners (I'm somewhere in between, by the way) when in my experience it's the other way round.

Case in point - popped into the newsagents the other day and had to wait ages before buying my paper because some old git was yakking away to the owner about how one of his relatives had moved to Israel and everyone there was so polite, they speak to each other on buses (WTF - probably just checking you aren't about to detonate...), so much better than here where no-one has any manners, aren't young people horrid these days, etc.

Eventually, he buggers off, I buy my paper, go to walk out the shop and he's chatting to a friend, oblivious of the fact that he's blocking the doorway.

Length? About 15 seconds before I gave up asking "Excuse me" (at increasing volume) and squeezed past thim.

And I'm sure I heard the coffin-dodger exclaim "How rude!' as I walked away...
(Capo, Tue 24 Feb 2009, 12:07, 4 replies)

a thousand times yes
it really pisses me off.

middle-aged women tend to be the worst in my experience, and the least deserving of the respect that they think they are due.
( Vipros. clever got me this far, then tricky got me in, Tue 24 Feb 2009, 12:09, closed)

middle aged women
_with children_.

Not only "How rude" but "HOW DARE YOU PUSH PAST ME! I HAVE CHILDREN FOR GODS SAKE!"
( uberdeity Wondered why Owen Lars knew of the term "hell" on, Tue 24 Feb 2009, 12:39, closed)

I see this a lot on trains
You wait where the door will be when the train arrives. Some old bint then tries to push past you to get to the door first.

Now I take it that if you push me, the rules are I can push back. So I do. Just enough to prevent them jumping in front of me.

They usually complain about "Haven't you heard of ladies first?", which I love, as I can use the "It only applies to ladies" reply.

Chaps do it as well, but generally don't complain and take a rebuttal much better then women.
(Kliper Filllets Getting noticed by twats on the internet since, Tue 24 Feb 2009, 14:51, closed)

old twats
i had a very similar experience, outside tesco on a christmas eve. I had just finished work and was popping in with the wife to grab last minute goodies. Cue old git and 3 freinds standing right infront of the trollies. I say "excuse me".
wait 10 secs.
nothing happens
I say "escuse me" again.
a lot louder.
old git looks at me like i have just fallen out of his colostomy bag and says "i heard you the first time".
didn't look so smug when i said to him in front of his chums "well you should have fucking moved then, shouldn't you. You auld twat."
at this point, i left him to choke on his dribble.
(Razielskorp, Tue 24 Feb 2009, 15:15, closed)