When women who get botox injections in their lips and end up with enflamed/swollen lips
whenever a lady bends over and her butt crack shows
when that fine hunny bent over i saw that muffin grin.
When a grin (or any other object) is perfectly symmetrical. Yeah man.
Racecar grin and a bottle of gin.
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To do something for the sake of Just doing it, and having no real purpose or goal other than just a good time.
"You wana Suck eachothers cocks for shitts and grins?"
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A large, toothy smile one has while under the influence of LSD, that will not go away.
I've got the Electric Grin, I just can't turn it off!
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Man's smile when he has a near constant erection.
I can' wait to be with you again. I have a Cheshire grin that won't go away!
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When you wakeup in the morning with an awful hangover (thickhead) but then you realize how much fun you had (grin).
Al woke up with a terrible headache after his 40th birthday party by then remembered how much fun he had. He was experiencing a thickhead grin.
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