You and your girlfriend/boyfriend break into someone's house on Christmas Eve, have sex under the tree, then steal all their presents.
"What'd you guys do for Christmas?"
"Well we were horny AND poor so we decided to give the rich people up the street The Grinch.
A green hairy looking dude who has yellow eyes and is very mysterious.
the grinch: bahumbug
n - A green martial artist responsible for the breaking of Joe Swanson's legs.
Ryan: How come the neighbor from Family Guy can't use his legs?
Mark: Didn't you see that episode in the first season? He tried to stop The Grinch from stealing Christmas from orphans, but ended up getting his ass whooped, and fell off a roof. You don't fuck with The Grinch.
A perverted assclown
that lives on the top of a mountain where he has a telescope he uses to look down women's shirts. He sneaks into houses at night so he can get a good look at women (and in some cases men) in their underwear. He rapes the women of Whoville and murders children. The Grinch is public enemy #1 in over twenty countries worldwide for this reason but nobody is enough of a dumbass to go and mess with him. Those who ascend the heights of Mt. Crumpet seldom return alive or at least a virgin.
Billy traveled to the top of Mt. Crumpet and returned with everything but his dignity and his virginity. Oh damn you, The Grinch!
Stealing a girls virginity unwillingly using Christmas Themed items.
"I raped that ho ho ho with some jingle bells."
"Don't make me give you The Grinch you next..."
A sexual act of stuffing a pine tree into the vagina or anus of another.
1. "Ill stuff up the tree" Ricky exclaimed, as he proceeded to wedge the large Christmas tree into his Melba's vagina, as if he was the Grinch himself.