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1) a phrase you shout once your penis becomes erect.

2) a phrase you shout when you are about to beat someone so bad in a videogame that it makes you sexually aroused.
mike: "It's Boner Time!"
Bob: "you have a boner right now, dont you?"
Mike: "yep"

John: "oh man! This match is full of noobs waiting to get pwned! It's Boner Time, bitches!"
by paster whackadoodle March 23, 2012
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