What is Cheesin'?
1.
Smiling artificially and excessively largely, as if a picture is being taken of you.
Man, I had to lie to my parents last night and I was cheesin' hard!
2.
The act of smiling, as if posing for a picture
She started cheesin' when the boy she liked gave her a compliment.
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3.
The act of smiling so intently that one might almost laugh. A smile that is intense.
Gurl, you are cheesin' so hard that that man knows you want him.
4.
Smiling uncontrollably because you are high or otherwise intoxicated.
She hit the blunt and within minutes was cheesin' like a mug.
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5.
Being noticed in a flirtatious manner or noticing someone in a similar manner.
Damn Ed, you are cheesin' on her hard!
Dude, that chick over there at the bar is cheesin' you!
6.
To act in a manor where one is out of control, ones speach often resembles that of someone under the influence.
-I think I see God?
--Homie, you cheesin'
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7.
When u r propa cold u say I'm cheesin' insted ov i'm freezin'
fuckin hell its fuckin cheesin' 2day!