When a friend keeps a Bi chick and/or lesbian from getting laid by her girlfriend.
Friend 1: "Come on guys lets go to the movies!"
Girlfriend 1: "No ive got a beter idea. Me and my girl will stay here and you can go to the movies."
Friend 2: "Oh come on guys, it'll be fun!"
Girlfriend 2: "Fun for you maybe. You fuckin Twat Block!"
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