So many epithets, so little time. These are in no particular order.
Fucko
Dickhole
Motherfucker
Assbag
Rat bastard
Capt. Buttfuck
Shithead
Assmunch
Dipshit
Inbred douche nozzle
Dingleberry
Twatface
Let's hear yours. Why? Because it's Monday (Tuesday, whatever), assmunch!
