1) To remove the fun from a situation (especially a competitive game.)

2) Someone who disappears for the night with a member of the opposite sex and then refuses to share the sordid details of the encounter with their friends

To be the center of attention at an amusing and unnecessary rate.

Derived from the combination of clit and stiffy, Cliffy is a term used to describe an erection of a female's clitoris. Usually due to sexual stimulation or arousal.

A know-it-all who is fond of spouting random facts. Taken from the character "Cliffy" from Cheers.

Cliffy's my nickname, not mucus =(

A man of a homosexual orientation, who enjoys gay sex regularly. He sits on his own at home masterbating to gay porno.

a dried piece of mucous, also known commonly as a booger, which is barley visible at the entrance of a nostril. A cliffy can also be attached to nose hairs.