an acronym for "Back Yard League", an amatuer sports league commonly formed by high school boy who cosider themselves "a band of brothers". Activities range from hockey to partying.
Guy #1: "Hey bro. You going to play hockey later?"
Guy #2: "Nah man. Sage didn't invite me. He says I'm not in the BYL."
Guy#1: "Why am I talking to you again?"
Guy #2: "I was at the party at Ernies."
Guy #2: "Nah man. Sage didn't invite me. He says I'm not in the BYL."
Guy#1: "Why am I talking to you again?"
Guy #2: "I was at the party at Ernies."
by 1bigolnut March 24, 2010
by BP&JELLY August 31, 2018