Someone who is superior to you in all aspects of life especially on the football field. You are basically a scrub when you're around a fly boy. Many times you can see a fly boy with a diamond cutter hand sign as recognizition.
Jimmy "Did you see the fly boys last friday, they may be unstoppable"

Jane "There's no maybe about it sir..."
by Fullback Assassin October 28, 2010
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Any bug (whether it be a human or an actual insect) that is really annoying
Friend 1 " Ugh, There's a Fly Boy in the room."

Friend 2 "Yeah, mosquitos are awful."
by ban_water May 6, 2020
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