mcchicky Posted in M Best definition mcchicky a person who is a really good friend. or it could also mean if your a weird shady person. look at that mcchicky in the hall, he is suck a mcchicky for going out with that slut. How satisfied are you with the definition? Looking for mcchicky meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 8 times.