When you put out your, still very hot, but used cigarette in your partner's anal cavity.
Jeff: You know you should really try smoking while you have sex?
Joe: Why?
Jeff: After you finish you can giver her a Cigarette butt.
Joe: What the fuck is a Cigarette butt...
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.