boo coo Share definition Flag A hair style that resembles a giant beehive covered in Elmer's glue that has been rolled on an unswept floor of a barber shop. >Jan Crouch's hair is fucking boo coo.>>I don't think it's that bad.>Don't be gay. boo coo by hf_ June 23, 2010 0 0 Get merch Get the boo coo mug. Buy Now — $32.95 See more merch