cheesin: to grin insanely. Quite often after good news or a good getting into someone. If "pure" said in front of it, then a common Glaswegien saying emerges.
Not to be mistaken from the older sayin "cheesed off" used by middle aged people who still think that they are "hip"
I'm cheesin after last night
Ay you're pure cheesin ya bam
I'm cheesed of dudes 'coz I'm turning 50 tomorow
by random bulldog August 3, 2004
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The act of huffing or inhaling concentrated urine from a male feline. When male cats are marking their territory, they release concentrated, pure, and highly hallucinogenic urine. Hallucinations experienced from huffing "the cheese" cause intense visuals and out of body experiences. One may feel they are re-living the movie "Heavy Metal." For further reference watch the episode of South Park titled "Major Boobage."
"Dude, I'm cheesing my fucking brains out right now..."

"Dude, Nick is cheesing his fucking balls off right now."

"Billy is cheesed out of his god damned mind."
by T-Hag April 11, 2008
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To be trippin or actin a fool. Predominately teachers and annoying people who need to chill.
Austin told the teacher to stop cheesin because she told him he was actin a fool.

Tyrone Biggims told C'riiesha to stop cheesin when she asked him for her child support for their child J'Crisp.
by pp el creador February 28, 2014
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word for high. Often used in school
Dude you fuckin cheesin right now?
by fuehrerboy October 17, 2007
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a heroic person that goes round turning everything ti touches into cheese. Basically, a cheese covered terminator.
Cheesinator: "Im going to turn you into cheese!"
Man: "Oh no!"
Cheesinator: "Oh Yes!"
by Toby Marshall July 7, 2008
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Texting, or talking to someone that makes you smile or that your into.
Girl you cheesin to hard on me.
by Pimp C aka BEAST February 21, 2010
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