BRUNDLEFLY Share definition Flag An insult relating to the movie, "The Fly". Calling someone a "BRUNDLEFLY" is also referring to them as ugly and insect-like. Bob: Oh man dude, you're a BRUNDLEFLY. Bee: *Bzzzzzz* BRUNDLEFLY by AsianPersuasionBrih July 8, 2011 0 0 Get merch Get the BRUNDLEFLY mug. Buy Now — $32.95 See more merch