Top Definition
When a female reaches between a man's legs from behind to grasp his cock and balls.
As I was leaving the party I was surprised to receive an undercup while in mid-step. Unfortunately, when I turned around she was built like an offensive lineman so I ran away feeling violated.
#grope #grasp #cock and balls #violate #offensive lineman
by dat.bro February 21, 2011
Where by a group of Lads grab a young skets breasts from under the top and often leading to a bukaki.
" Hes only gone for undercup and she loves it."
#boobs #sket #hoe #ridiculi #boob
by Slaps December 07, 2009
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