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1.
The act of someone slapping, swatting, or smacking another someone on the butt as they walk by as a way to tag, mark or provide admiration to the one receiving the smacks’ body.
Girl walks by; guy slaps her on the butt.
Girl 1: Ouch!
Girl 2: Dang girl you just got a Bootytag!
by TRACK10 March 18, 2011