chelsea grin

a victim has a card e.g a credit card forced inside there mouth, then the attackers punch the victim in the stomach to make there muscles tighten, making the mouth snaller, the card digs into the skin and makes a "grin" at the sides of the victims mouth.
a chelsea grin is performed on greenstreet
by TomJackson404 December 24, 2008
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emo grin

a small grin an emo gets while seeing another person in a great deal of emotional or physical pain which they find extremely funny but cannot laugh because laughing is very un-emo, so they settle with a small grin.
someone falls and breaks their arm before a very important event that involves them using that arm. An emo would see this and develop a smirk. (emo grin)
by kRAze2010 December 24, 2008
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grin-go

when a light is red and you want it to turn green.
Man, I got to take a piss and the light's red... grin-go!
by CL211 April 07, 2008
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muffin grin

whenever a lady bends over and her butt crack shows
when that fine hunny bent over i saw that muffin grin.
by willx4 February 09, 2007
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grim grins

Ironic and somber-faced jest used to temporarily make light of a serious matter, situation, or topic, in order to help everyone involved to maintain his sanity and composure about it.
Concerned citizen #1: Well, if the nuke-plant does blow its top and blankets everything for 1000 square miles with glowing radioactive fallout, at least it'll save on batteries --- we won't need flashlights to see at night.
Concerned citizen #2: Yup, that thought's a case of grim grins, all right!
by QuacksO December 03, 2011
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Cheezy grin

when a female smiles as her partner proceeds to defecate on her face
by rye19 July 28, 2009
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Dirky grin

The facial expression of a person after having his face covered in hot semen.
After being the receiving member of a bukkake circle, Mike showed his Dirky grin.
by Gosset's future child May 10, 2018
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