demon grin

When one licks out a woman's vagina whilst she is on her period

Her: wait I'm on my period
Him: doesn't matter *does it at the risk of swallowing blood clots AKA demon grin

by Aicjmhens December 5, 2017

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 3, 2011

RaceCar Grin

When a grin (or any other object) is perfectly symmetrical. Yeah man.

Racecar grin and a bottle of gin.

by dudemanyesbro January 25, 2010

Electric Grin

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!

by Mosey on down December 18, 2009

Shitts and Grins

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?"

by Bofish December 22, 2008

cheshire grin

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!

by PlayfulCan0358 November 13, 2013

thickhead grin

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.

by ARTIFAX January 26, 2009