brosef Share definition Flag a jock with a cooridinating outfit and socks, a gold chain outside the shirt, guinea t and spiked hair that could pop a balloon.. most high school seniors and 1st and 2nd year college kids are brosefs, and don't know it. brosef by ti2xger July 7, 2009 0 0 Get merch Get the brosef mug. Buy Now — $32.95 See more merch