Slang used to refer to someone's ass.

Who fucking knows anymore? First, it meant factual, and now it means fictional. What the fuck, internet... what the fuck?

To have lucious lips, good enough to sit on

Which means you’d sit on his/hers face

colloquially used to describe a person with a penchant for lying flat on their back and offering their face as a female's chair or resting place in anticipation of the double-glazing that will hopefully follow, generally for the entertainment of others and occasionally in exchange for money.

1- Any raised object on which one may rest the buttocks and legs by climbing upon.

2- Spain's national car