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1.
The act of two girls smashing, vag on vag, while one girl has whip cream in and/or around the vagina, the other with cherry fruit filling.
Guy 1-"It was cool that bitch bein' a lesbian at first. Then the bitch started pissin me off with all that pie bumpin'."

Guy 2-"Good thing her and Alishia don't start bumpin pies, could end up being a cheese danish."
by lotsandlotsofherb October 25, 2010