1 definition by pfdjkbuer8k

The act of extensively clenching one's butt cheeks forcefully together until the point where the skin of the gluteus maximus dimples, forming what looks like a wrinkled raisin. Must be done without the use of hands or assistance from others.
Anna successfully avoided anal penetration at the party by doing raisin butt.
by pfdjkbuer8k December 14, 2016
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