girl1: i like your jeans girl2: thanks these are my butt jeans girl1: how the heck does your boyfriend get those off?
a pair of jeans in which every teenaged girl owns at least one pair with the soul purpose of making the girl's butt look good
"girl1: i like your jeans girl2: thanks these are my butt jeans girl1: how the heck does your boyfriend get those off?" What is the definition of "butt jeans"?