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1.
(verb) To die or, more specifically, to be killed.

"Your" can be substituted with any pronoun, depending on the context. See examples below.
An Army Officer addressing his men before battle: Men, I'm not gonna sugarcoat it. Jerry has got at least a dozen machineguns up on that hill. But the word's come down from the top brass; we're to take that position at all costs. Be careful, watch each other's backs, and don't drop your bones.

A Cuckold to his friend upon seeing the man who fucked his wife: I'm gonna go drop his bones.

The Cuckold's friend in response to the Cuckold's threats: Don't start anything man. I'm not trying to drop my bones.
by BoneDropper April 16, 2014