Come up with an insulting word or phrase, then add one of these handy intensifiers!
Example: Call someone a jerk. Then add “bag”! A jerk-bag is much worse than a plain jerk. Try one…

Bag, wipe, sack, wad, bucket, smear, douche, lick, hole, suck, spray, spank, munch,
stick, flick, plug, storm, tube, rag, head, smudge, pad, job, pack, tray… etc…