What’s the most imaginative insult you can come up with?

Calling someone a "Bulbous knuckle scraping retard"

I heard Jon Taffer once say

"I'll call you an douchebag, but that'll be a insult to every douchebag I know.''

I once said to a dude on youtube that wanted to argue and be a dick:

'Like, dude, you're literally being an immature fucktard on Youtube, arguing about the most stupid fucking thing, despite being proven wrong already, yet you seem to think that being a condescending asshole and calling people names for no reason is some kind of indicative factor towards you being intelligent. It is not. Not only are you absolutely devoid of any such intelligence, you're also an extremely narcissistic, rude piece of shit, with a complete lack of manners, or the good sense to just shut the fuck up when you're clearly fucking wrong. I hope you have a terrible dia and I hope the door slams shut on your hand on the way out.'

Actually, to be honest, I think it was something like that, but that was kind of just a template for the general kind of thing I say when people fuck me off on Youtube. XD

I have thought of a few recently, but I never used them, tbh:

1. At least my parents got to choose me while yours lowkey don't wanna deal with you. They just don't wanna say it to your face.

2. "Do you know who my dad/mom is?" The guys who dropped you on your head? I think you're using small words and a faux, rich accent just to hide your lower-than-mental retardation.

3. "I'm eating the finest caviar. This costs your whole house." Why would I wanna waste my rent money on small, black balls?