Guy: wow, your mom is so hot.
Other guy: man, that's so bunked up! Don't say those things.
by The Man with a Plan November 14, 2013
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To bend over. Show your butt. Told to a child in preparation for a spanking.
Bunk up Chile! You need a good beeatin’!
by Fleshaxxe July 24, 2018
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