When someone is acting like a bitch, and you don't really want to call them a bitch- instead, you call them a bitchnugget. Bitchnugget will catch them off guard, and they will engage in vomiting.
*Martha is being a bitch*

"Martha, you're being a bitchnugget!"

*Martha begins to projectile vomit*
by Temple University September 07, 2006
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1.another way to say shit in a more creative way

2.female dog feces
1."AAWWW Bitchnuggets, I just messed up!"

2."Dude you just stepped in Bitchnuggets!"
by Setlik0 May 30, 2008
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