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1.)A crab shit is when you have to take a mean shit and you have to mount the toilet and put you whole body on top of the toilet seat in a back-wards crab position.
billy: hey alex
alex: ya?
billy: why is there footprints on my toilet seat?
alex: oh i was just taking a crab-shit why?
billy: ok well theres poop on the seat to...
alex: ya i sliped
by my name is 12346 January 01, 2012
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