Slang used to refer to someone's ass.

To have lucious lips, good enough to sit on

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

2- Spain's national car

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.