Someone so ugly that even the mere sight of their face is a method of birth control. That is, they are so physically unattractive that they will probably never have sex.
"Oh my god, did you see how ugly that guy was?"
"Yeah, what a contraception face!"
or:
"You're so ugly your face is a contraceptive!"
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.