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A saying after you have insulted someone, accompanied by a hand movement. The most popular form consists of bringing your right hand up beside your head, and swiping it down to the top of your left thigh. Made popular in France by the film "Brice de Nice".
Woman: My boyfriend doesn't love me anymore!
Brice: No, he never loved you. Je te casse!
by musicaljello12 June 30, 2005