Sorry, Pete, but crap is not the correct name for the game played on a table with two dice. I know the English language changes over time to accommodate the sloppy usage of the populace, but craps is the name of the game. Here's what Webster says, and what the derivation of the term is:

Main Entry: craps
Pronunciation: 'kraps
Function: noun plural but singular or plural in construction
Etymology: Louisiana French, from French crabs, craps, from English crabs lowest throw at hazard, from plural of 1crab
Date: 1842
1 : a gambling game played with two dice

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The word crap is properly used only in conjunction with the oblong plastic things that Skip and Jill collect [g].