The opposite of overchicked.
When a better-than-average-looking guy ends up with a chick that's less attractive than he is. This is often the result of a chick that's willing to put out and guy that is less than confident in himself.
Sally is 5'03, 200lb and spotty. Harry is 6'04, healthy, wealthy and handsome. How Sally managed to snare Harry is a mystery. He definitely underchicked on this hook up.
*CAUTION*- Playing this prank on the wrong person may result in a severe ass beating
Johnny's favorite prank had always been undercheese-ing, but one day he played it on his seven foot brother. . . . . the funeral is scheduled for next Saturday at 11:00