Top Definition
it pretty much explains itself, a blowjob (BJ) that you get as a birthday gift...try your luck out, guys!

Matt: Hey, Laura, it's my birthday you know...so i was wondering i
Matt: Hey, Laura, it's my birthday you know...so i was wondering if i can get a birthday bj?

Laura: Ew! No! sicko...
by Endless_Echo October 11, 2008

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