In case you missed it, watch Skeletor's insults here.
"Brainless idiots, you couldn't even beat a motley group of gnomes!"
No one puts someone down like Skeletor, as shown in this supercut of some of his best insults from "He-Man and the Masters of the Universe." So if you need a few zingers to get back at that coworker who stole your sandwich out of the fridge, he's got you covered.
Just be careful, because when you call someone a "muscle-bound oaf," you are bound to see a few tears.