Green’s Dictionary of Slang

crump (out) v.

[SE crump, the noise of an object hitting the ground]

1. (US campus) to pass out through exhaustion, boredom or alcohol; thus crumped (out), adj., passed out drunk.

[US]W. Grove Down 243: ‘Old man crumped out?’ he asked.
[UK]R. Frede Entry E (1961) 62: It’s just a question of who has the money when everyone else crumps out.
[US](con. WWII) G. Forbes Goodbye to Some 244: We took about eight dames out on it. Everyone was loaded [...] Dames were crumped out all over the place.
[US]W. Safire What’s the Good Word? 213: In the late fifties [we] used the expression crumped out often. When we were tired, we would ‘crump out’.

2. (US) of machinery, to break down.

M. Collins Carrying the Fire 284: If the Saturn V crumped, it was a whole new ball game.
[US](con. late 1950s) W. Safire What’s the Good Word? 213: Once in a while our hair dryers or some mechanical apparatus would also ‘crump out.’.

3. (US) to die.

[US]J.C. Holmes Horn 133: Man, you kill me, I’ll die, I’ll crump...
[US]S. Shem House of God 77: The Yellow Man and the Runt [are] both about to crump.

4. (US) to kill.

[US]T.F. Jones Stairway to the Sea 55: Hamlet is big buds with this other cat, Horatio, [...] but all he can think about is the way his uncle crumped his old man.

5. (US) to destroy.

[US]M. Skinner Red Flag 128: So you think you shacked the target, crumped it, waxed it?