Top Definition
A state in which someone takes on the physical characteristics of the Grinch, who appeared in the popular children's book written by Dr.Suess "The Grinch who stole Christmas." These characteristics include a long slender body with an overly large pot belly and a hunchback. This form is often found in male teenagers with poor posture and who are frequently inactive. This is actually quite rare due to the fact that those who suffer from this have a hard time wheeling chicks. The result is poor reproductive patterns. This has actually been liked to a sex trait disorder found on the Y chromosome, although nothing has been proven officially. Skeptics of this have said it can be reversed with treatment but they have yet to successfully rehabilitate someone suffering from these characteristics.
Guy 1 - "Dude that guy has a funny look to him"

Guy 2 - "He's Grinchly is all, but don't give him too much of a hard time, it's a rough lifestlye.

Guy 1 - "Your right, i'd hate to be that guy but I can't help to think he brought it upon himself."
by August 12, 2010
To act or feel in a non-Christmassy way, as though you wish it wouldn't happen in the first place.
Ed: Took down my Christmas decorations already.
Edd: But it's only the day after Christmas!
Eddy: Dude, that's Grinchly!
by acesgirl6 December 29, 2009
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