crap out

Meaning

1. (intransitive) To lose a game of craps by rolling a seven.
2. (intransitive, slang) To abandon an endeavour or project; to back down.
3. (intransitive) To fail; to stop working.
4. (intransitive, slang) To blunder; to fail massively.
5. (intransitive, slang) To die; to collapse; to fall asleep.
6. (US, intransitive, slang) To idle or mess around.
7. (derogatory, intransitive, slang, transitive, vulgar) To give birth.

Etymology

From die-rolling in the game craps.