Biaché (bee-a-Chei) is a friendlier way to call someone a bitch it is mostly used when joking around with friends as to say don take this seriously it’s just a joke
1.a human female who lacks refinement - more prone to drink from a 40oz bottle of Cobra than from a fluted champainge glass 2.an epithet used in reference to a buddy whose favorite team just lost to your favorite team.
1. "Bring me a beer, BIACH!
2. You lost by a field goal, BIACH! Give me my $20 now, BIACH!