Ha, I learned something new today! Has a totally different meaning on this side of the pond!
There are some amusing differences. I believe if you're
piśśed on your side of the water it means you're angry; to us it means you're very drunk.
We do say 'piśśed off', which is probably similar to your meaning of piśśed (and they're most likely connected/related in some way) but I think our meaning of 'piśśed off' is probably better defined as 'angrily fed up' ( ... actually, does 'fed up' mean the same over there?).
(stupid word censor: Had to replace ss with śś. Why is piss allowed but not piss-ed!?)
I'm not even gonna tell you what fanny means over here, but let's just say the first time I saw American TV shows talk of fanny packs and sitting on fannies, I thought I was watching a porno.
Which reminds me, I remember watching Married With Children one time (a show for all the family, or so I thought) when they started talking about
Peggy's family, the Wankers who live in Wanker County (apparently). I had to rewind several times to check ... I thought I must've misheard.
A few other differences that spring to mind:
Ass is like a Donkey ... We say arse.
Faggots are meat balls, usually
made by Brains (that's
by brains, not
from. I think they're probably made from
arseholes).
Shag is not a dance. Well ... I suppose it can resemble the
Hokey cokey (or Hokey pokey) perhaps (in, out, in, out).
Sneakers are called trainers.
And
Randy is not a good name to christen your child on this side of the water (it means roughly the same as horny).