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1.
flies that lay their eggs in rotting meat
Theo didn't have much of a sex life as he was attractive only to blowflies.
by yorrick hunt January 22, 2008
 
2.
someone who enjoys other peoples cocaine; a cocaine mooch
"Keep dat blowfly bitch o' your'n at home next time bro'"
by Joe Bone March 07, 2005
 
3.
The visual effect of pulling your underwear up so high that either testicle hangs out its respective leg hole.
Brian and Jaymz had no fucking idea what to do with pale pink lacey g-strings, both of them being professional virgins. Jaymz put them on his head, crotch over his mouth and poked out his tongue, doing his best impression of a spitting viper. Brian put them on in the right place, but his balls were hanging out either side. "Look!" he exclaimed with glee, "I'm a blowfly!"
by Typus May 31, 2005
 
4.
Annoying flies that eat shit & fuck each other

cops are aften refered to as blow flies because if they arent eating shit thier fucking somebody
cop:you coming down town
Bobby:damn, blow flies
by woodywoodfuck September 15, 2009
 
5.
someone that thinks that they know everything
your aunts boyfriend lee is a blowfly
by Anonymous September 07, 2003