"Bum cheeks" refers to the two rounded parts of the buttocks or rear end.
Full definition
But Boumsong even made Titus Bramble look good before surprisingly signing for Juventus while they spent a season in Serie B Left back: Djimi Traore (Liverpool, Portsmouth) He may have a Champion's League medal but he still clenched
Scouse bum cheeks every time he made a tackle in the penalty area.
Inspired by Dada, (he notably has a tattoo of Schwitters» poetry on his
left bum cheek) he is a consistent advocate for amateurism and free emotional expression.
From Miley Cyrus's
bum cheeks to war in Syria; from David Cameron's parliamentary humiliation to Dan Hodges leaving the Labour party, the internet has been a hot mess of news, views, and utter nonsense.
From here, squeeze
the bum cheek of the top leg in order to bring the knee toward the ceiling, pause briefly and then return.
As a New Yorker, getting used to girls (who are not hookers) walking down the street with
their bum cheeks popping out of their shorts is still a bit shocking.