look up any word, like sex:
 
1.
The act of putting boogers on other people.
Guy 1: Dude I was in Math class yesterday and Adam put his booger on my arm.
Guy 2: He totally Grinched Yo Ass!
by Where's The Queef? February 11, 2012
 
2.
A person who sits next to you in a public bathroom stall to take a shit, when there are options to sit one stall away. So if there are three stalls and you are sitting in stall 1 ...the grinch would sit in stall 2, EVEN if stall 3 is open and clean.
Dude I was in the work bathroom taking a dump and David came in and totally grinched me.
by CSnyder February 10, 2010
 
3.
The act of being robbed just days before Christmas, just like the Grinch who stole Christmas.
My friend got grinched and now has to scramble to find presents for his kids
by gjjammin February 03, 2010
 
4.
When one's heart grows multiple sizes, bursting through actual and metaphorical barriers and eliminating past grumpiness.
"My heart totally Grinched when I saw a Tweet of Nathan Fillion kissing a weensy puppy."
by skrillaknits December 16, 2009
 
5.
When a person who is unattractive inconcievably ends up dating someone who is significantly hotter, thereby unfairly removing him or her as a dating option.
Person 1: Wow, did you see that Brian's dating Sarah? She's waaaay out of his leauge.

Person 2: Yeah, I know, he totally grinched her!
by TMNS6789 September 27, 2011
 
6.
a weird sounding but fake sexual act, that a boy may brag about doing to a girl, when really he fell asleep
:Mike what did you do with Hannah?
:Oh...i grinched her
by meemeemike March 01, 2011
 
7.
When you are taken advantage of by the scammers who put up a fake offer for a freebie that never comes, while your spam and junk mail increases from the spam and mailing lists the scammers sold your information to.
I've been Grinched again, I should have known, that free widget was just too good to be true.
by potsofclay December 10, 2012