A person who's name is John followed by a middle name beginning with "Finn-" . Most commonly given to teenagers or adults with short necks, loud mouths, annoying but overall awesome people.
by Enzo Ferelli April 10, 2005
Somebody who is a dick to everyone and has a vagina. A guy who won't listen to your problems and is just a big old dickbitch.
CuDi: Did you see that guy? He's being such a Finny J Mixer!
SwedishFish: Marcus is such a Finny J Mixer.
Puckfasa: Let's hope he doesn't break a nail!
SwedishFish: Marcus is such a Finny J Mixer.
Puckfasa: Let's hope he doesn't break a nail!
by iamanonymouslysubmittingthis December 30, 2011