bmx boy Share definition Flag a bmx boy is a guy who rides around tryin to do tricks on his bmx. like a skater but much cooler. as soon as the bmx boys arrived at the skate park, the skaters pissed off. bmx boy by superelf October 6, 2006 0 0 Get merch Get the bmx boy mug. Buy Now — $32.95 See more merch
