I really enjoy a good creative insult (although don't get me wrong, I also enjoy the huge varieties of ways in which the word 'fuck' can be used in daily life).
As a Scot, I feel we're pretty good at this sort of thing - 'pie' and 'rocket' being two personal favourites. It's amazing how you can make two fairly innocuous words sting just through context / intonation.
What are your favourites?