The act of stealing packages from peoples' homes (i.e. porch piracy) during the holiday season. People often partake in grinching to avoid spending their own money on costly Christmas gifts.
A: Hey man, what presents did you buy for your family this year?
B: I didn't buy shit. I'm going grinching around the neighborhood this week.
Having a large, surprising erection from a penis of below-average size.
The term is derived from the climax of Dr. Seuss’s How The Grinch Stole Christmas: “And what happened, then? Well, in Whoville they say — that the Grinch’s small heart grew three sizes that day.”
“That ho was so fine, I was grinching before we even got back to her dorm!” Xander exclaimed, “it was about time to I laid the rumors of my smalldong to rest.”
The act of performing oral sex, but instead of it being to the vagina or penis, it is to the taint, otherwise known as the gooch, of the recipient. The beauty of it is it can be done to anyone by anyone!
"Man I was eating this girl out but she wanted to me to start gunching her. Apparently it feels really good, maybe next time I'll ask her to gunch me."
When 2 men go and kill an animal of choice. Then, they extract the blood of the animal and skin it. After that, one man wears the skin of the animal and makes the noises of the animal while the other man fucks him using the animals blood as a lubricant.
Yo bro I saw some roadkill back there, Let’s go glinching!