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Noun: (bee-ja mick-gee-ves) beej mcgeevs refers to receiving oral sex from a girl. An extrapolated version of BJ, which of course is a shortened version of blow job, which is of course slang for oral sex.
Derek: "Yo, my dude, you pipe that last night?"
Mike: "Nah braj, she just gave me a beej mcgeevs"

Other usage:

Sam: "I'll take a beej mcgeevs from Anyone"
Eddie: "Even a one armed broad?"
Sam: "Anyone...."
by MattyMeds November 01, 2013