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The act of stinking the end of a flute up a women's vagina. While up there another girl (preferably a flautist) will play a a concert B-flat scale.
Girl 1: Hey did you see that video called "2 Girls 1 Flute"?
Girl 2: Uhm no, I don't think that exist.
Girl 1: Lets make our own video!
Girl 2: Okay!!

Jill was 2 girls 1 fluting Jillian on the bus ride home from the band trip.
by this kad September 23, 2011
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