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1. The act of taking/boosting/lifting/stealing something from a relative or friend, right in front of them, most often in a playful manner, with no real intention of returning it. More fun when called to their attention!
2. The act of taking someone's "Boo", boyfriend or girlfriend.
1. George: I see you have a couple of Twix bars?

Fred: Yeah, I just picked them up from the corner store.

George: Oh, yeah? BOO GANK!! (As he grabs one and runs off while opening the wrapper and taking a bite!)
2. Man, I was only out of town for a couple days, and somebody already moved in and Boo Ganked my girl!
by Chillalittle January 22, 2018
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