What's your favorite insult(s)?
Mine is "Parasite". So much fun to say.
Who needs insults when you have strong words?
Proving someone wrong. Yes.
"Your mother was a hamster, and your father smelt of elderberries!"
-- Quote from the best villain ever
Something involving sarcasm or an analogy.
"Oh you proved me wrong? I guess a dog proves me wrong when he barks as well." Something like that.
Someone calls me a fail
"you're dad's condom was a fail"
None. Usually when someone resorts to insults it's because they've clearly been defeated in an argument and they have nothing logical to say back, yet they don't want to be considered "the loser".
I don't insult people because I'm not disrespectful.