What a fantastic and colourful language we Brit's have
"TWAT" i must admit to using this alot but my favorite has to be "WANKER" and while saying it you've got to hang on to the "W" to have full meaning to the person your saying too.
If any of you guys have seen this years UK version of Big Brother there's a guy on there who has tourette's syndrome and quite often blurts out "WANKERS" , i know this isn't p.c. but it is very fookin' funny.