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When you pull grey hairs out of your head or beard to stay looking young.
A: Man I spent 20 mins grouting my beard last night.
B: Looks good though...
A: Yeah I can't be having grey hairs in it at thirty.
by @onlydavidbrowm April 07, 2017
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A word written all over the walls in the men's restrooms at the University of California at Santa Cruz library. The vandalism does not originate from one person, but from several who are eager to leave their mark in this subculture of collegiate society. The actual definition of the term is insignificant, for over the years its main purpose has been to connect the spirits of college males who are eager for humorous relief amidst long study sessions in the library.

It is tradition to create phrases with the word "grout" incorporated into them such as "The Groutain of Youth," "Grout Expectations," and "Grout of Site." The comments are often written in-between the wall tiles so as not to be erased by the custodial staff.
"Grout" is on its way to becoming a cultural phenomenon.
by Michael J. M. March 12, 2005
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Defined on here as an amusing bathroom-graffiti phenomenon. This same exact phenomenon was prominent in two high-traffic public mens' restrooms at Cal Poly, San Luis Obispo in the mid-1990's. It included also "The Grout Beyond", "Grout-o Marks", "The Grout Space Coaster," etc.

I'm not sure where it originated... I post it here because it's a second place in a different time, and it would be interesting to try to trace its origin.
The Grout Beyond; Grouto Marx; The Grout Space Coaster; Three Strikes-- you're grout; etc.
by mig May 19, 2005
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(Adj, Noun, Verb) The Word of the Month. You can literally replace any word with grout and it will work!
I shit so much today I grouted my pants.
I'm getting grouty! woo
You're a grout

by McFlooze April 28, 2011
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verb - to tinker with one's sphincter, but only with one finger.
Jane's tongue lapped at Dave's gooch while she tentative tested the brown waters by slowly grouting his coight.
by dero-licked December 16, 2004
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Alt. name for a fart. An extremely accurate onomatopoeia for a very short ripping stuccatto type fart. So accurate it follows the word exactly. GR - The rasping start, OU - the classic change in tone. T - the abrupt end as the sphincter slams shut. GR OU T
Did you hear that? Someone grouted during prayers.
by Brucester September 10, 2006
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