Definitions for "crap out"
Keywords:  throw, roll, first, come, thereby
to throw a 2, 3, or 12 on the first throw in the game of craps, thereby losing that turn.
In CRAPS, to throw any CRAPS on the COME OUT roll. Also, rolling a '7' before the point.
Rolling the number 2, 3, or 12 on the first roll