I don't get it.
"Hey Skeleton Man, I'm better than you! There's nothing you can do that I can't do!"
"Can you remove your own jaw and place it on your head?"
"Ah, I see I was mistaken, there is indeed something you can do that I cannot. As I am not a living corpse, I cannot so easily remove and reattach my own body parts."
"Perhaps you should taunt someone of the Troll race, like you they are not reanimated corpses. Should you present your boast to a Troll, your taunt shall stand strong."
"Indeed. I shall do as you recommend. You there! Troll!"