Lost for words ?
Check out insult.net for stock witty comebacks !
Some choice pickings :
" He doesn't know the meaning of the word "fear" - but then again he doesn't know the meaning of most words "
"The great thing about Glasgow now is that if there is a nuclear attack it'll look exactly the same afterwards - Billy Connolly"
"I've noticed that everyone who is for abortion has already been born - Ronald Reagan"