When a man inserts his nuts into a female's butt.
Yo gurl, Lemmie get dat NuttButt
by DerkieRayRay July 18, 2014
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(n.) The nutt inside a girls/guys butt after 3+ people have spread their 'butter'
After the fourth guy finished, Lorie was completely filled with that nuttbutter
by Sammy Nutt June 30, 2010
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