Top definition
To surprise the opposite sex by revealing one's penis in a perfectly normal social setting
Girl: "We entered the elevator and he randomly whipped out his cock for no apparent reason. I really got cockabooed!"

Man walks by a random girl in the mall, whips out his cock and shouts "COCKABOO! I SEE YOU"
by Cacksman December 06, 2010
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2
mens or boys underwear with a faulty crotch opening or stretched out leg holes that may expose the wearers penis.
Man just out of shower to wife half asleep in bed "Honey, look at these new underwear!" Wife waking to the sight of her husband's penis peeking out his undies at her "Those are "cockaboos", dear."
by shwilla April 12, 2010
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