Quarter-pound ass

A butt that is small compared to the average version, as most butts weight 0.5lbs

Jenny's quarter-pound ass looked non-existent in those jeans

20 pounds of bounce that ass

Its smells so fucking bad it's smells like a person who never washed their ass and they probably have cheese forming there and they just make you put your nose so deep in their ass

Girlfriend: wanna smell my ass?

Boyfriend: sure

Girlfriend: *makes his nose smell the nastiest shit ever*

Boyfriend: OOOOOOOOOOOOOHHHHHH you better go wash that ass and im breaking up with u ho and it smells like 20 pounds of bounce that ass