Sorry since I opened and read the 'Fightin words' thread I can see some competition here.

The insult I used love to hear was ' dipstick ', don't see it much any more which is a pity.

My buddy now 100% pure organic fertiliser used run in elections; anyway one of his favorite books was titled 'Insults'. He used spend hours studying it and could say the most disturbing things I ever heard. I think insulting people should be an artform, it should be a topic at University as well where I now see they are so ignorant.

A stiff walk in the early hours followed by an ice-cold shower and then the rest of the day insulting each other in the Lecture Hall!, that would add an entire new dimension to letters like Ph D...

Phish Diner

;0)