a "permanent grin" which one can only achieve through being in a totally different dimension (usually through use of peyote, lsd, and is definitely popular with shrooms)
guy1: so herd everyone went trippin this weekend, how was it?
guy2: it was great, everyone was real chill, paul's dumbass had a stupid perma grin that he couldnt wipe off and he didnt say shit the whole time. Hes such a sleezebag.
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The seemingly permanent smile that someone has after spending time with someone that they are very fond of, or doing something that they enjoy.
Kathi leaves work everyday with a Perma-grin. She must really love her job!
Look at the Prema-Grin that Christina is wearing this morning! I wonder who she was with last night?
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A form of torture.
Typically, two one inch incisions are made at the corners of the victim's mouth. Then the victim is tortured causing them to scream. This tears the flesh along the sides of the mouth, leaving a "grin".
Can alternatively be called a Glasgow Smile .
Heath Ledger's Joker has a Chelsea Grin.
Ichi the Killer has a Chelsea Grin.
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To do something for no reason other than to have a laugh.
Jo: lets go and see that new film.
Jake: why?!, its crap.
Jo: Just for Shits and Grins.
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Mostly common for villains, or people, who doing or about to do bad things on purpose for personal satisfaction.
Also known and a facial expression.
An "Evil Grin" is more subtle than a outright "Evil Laugh" but is still fairly exaggerated so as to make sure a viewer can not mistake it for a normal smile.
"He smiled at us, but the smile wasn't friendly; more amused, like Oh boy, more people to torture!"
- Percy Jackson when he first catches sight of Geryon (evil grin)
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When you eat a shit load of ribs and you have the sauce all over your face
Guy 1 : "Oy man look at the rib grin on that fat guy eating ribs"
Guy 2 : "Geez! That guy loves hes ribs that is the biggest rib grin ive ever seen!"
The tell-tale grin one gets while IM-ing at work or in class. This grin tends to incriminate the IM-er and lets others know that they aren't staying on task or paying attention.
"OMG, LMFAO. Stop it - I've got the worst IM grin and my boss just walked by"
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