Because that last list of underutilized insults was so damned popular I'm going to make up another list of them.
#1: Fag shagger (more useful if you're British)
#2: Sword swallower
#3: Ass rammer
#4: Choad muncher
#5: Rump ranger (They get a +2 to saving throws versus vagina)
#6: Doctor Cocklove
#7: Fanny bandit
#8: Eli Manning
Feel free to reply with your favorite underused insults and swear words.