Lax Squirrell Share definition Flag Noun - A lacrosse player who does not wear mid-calves, usually indicating that he is a scrub. Lax Bro 1: lol that guy sucks and he isn't wearing mid-calves. Lax Bro 2: Totally bro, what a lax squirrell Lax Squirrell by BRADLAX August 8, 2010 Get the Lax Squirrell mug.