Proposed by historians Sir Keeler Gonzales, Empress Mai Ton, and Archduke Sai Sriram in the early 21st century, on the campus of William Marsh Rice University, the law of conservation of grind states that the grind never stops but merely takes different forms. Grind takes three principle forms, potential grind, kinetic grind, and party grind ("grinding" grind as it is known outside of the intellectual community). Potential grind is given by the expression Mass x hours of sleep x g (the grind constant). g=69 grinds/sec^2. Kinetic grind is given by the expression (1/2)Pp^2. P=panic constant p= procrastination factor. Party grind is the inverse of kinetic grind, but can increase exponentially as given by dA/dt (alcohol over time). This Law has been widely accepted in the scientific and educational communities.
Person A: I need to rest, I've been working too hard today.
Person B: But A, I thought the grind never stops??
Person A: According to the law of conservation of grind, I am merely converting my kinetic grind into potential grind.
by President David Leebron December 08, 2017
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jet grind radio

the first game that ever had cell shading
aka in japan jet set radio
by Anonymous August 03, 2003
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coffee grind

Rubbing the crack of one's unclean ass against someone else's face in a act of degradation. The act itself is not unlike pissing on someone when they're down.
After he beat him up, he sat on his face and gave him a serious coffee grind.
by sweatypig May 04, 2011
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daily dirty grind

(dey-lee dur-tee grahynd, IPA: deɪli dɜrti graɪnd)
(ground or grinded)

-verb, noun
1. To masturbate while performing "the boring mundane parts of everyday life.
A daily monotonous job or task.

Being caught in slow moving commuter traffic." daily grind

-verb, noun
2. The daily or near-daily masturbation one performs, sometimes done with boredom.

Origin: I was brushing my teeth thinking it would be more fun to brush my teeth if I were masturbating.
Speaker 1: Dude, you should totally try out daily dirty grinding. I daily dirty ground when I made some eggs and bacons. It's so hard, 'cause you can only use one hand!

Speaker 2: Ugh, that's gross, man! How could you cook your food when you're jacking off? You don't splooge in your eggs?

If Speaker 2 wasn't grossed out...

Speaker 2: Dude, use your head. You can jack off without using hands.
by notreadyforLenny December 08, 2010
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Bo Hog Grind

To have a girl's whole body(Legs and arms) locked,while you fuck her!
My brother told me back in the day when he was single he would put all his girls into Bo Hog Grind. He told me "Tigs" you put her legs under your arms then put your hands behind her shoulders, lock everything together. Her legs up and pull her shoulders down, and MURDER IT..
by Craig "TIGS" P. April 29, 2008
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