What does ass cup asscups mean?

ass cup asscups meaning in Urban Dictionary

to cup the fart and hold over freinds mouth until they inhale the toxis smell making them gag Similar to the trend generally underboob, asscups are those bottom elements of a female's butt cheeks that will gloriously show up on that rare celebration when that dress she is wearing is just a tad too quick or those jean short pants ride up somewhat too high.*brought for your requirements because of the dudes at www.bonerlish.com