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'Thank you' in Spanish the way a tourist might say it. Also referring to the behind of someone who sat in a field for too long.

Grassy-ass for the crappy Spanish lesson.

Don't drag your butt on the ground next time, grassy-ass!
by The Kwoshinator May 12, 2008
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the english way to say "gracias" which is spanish for thank you
Person 1: can i borrow a pencil?
Person 2: sure!
Person 1: grassyass!
Person 2: no problem
by the dance chick July 22, 2004
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1. a really bad pronouncation of the spanish word "gracias", meaning thank you

2. when one sits on grass and get's grass stains on their bottom

2. Dude, you have a grassy ass!
by Alanna Rose Flaherty April 30, 2003
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An infection of the butthole that results in a green discoloring of the asscheeks. May be confused with the Spanish word for thank you.
My mother has grassyass. Dat shit as green as yo face when my dick went up yo bum.
by The most reliable person October 17, 2012
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A term used to describe a person w/ grass on their ass. Supposed to sound somewhat like "gracias."
You've been sitting around on the grass for awhile, and when you stand up someone tells you, "You have grass yass!"
by Stephanie :) August 22, 2007
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1) Funny slang for the word gracias
2) When you have sex with a girl on the lawn causing her to have a grassy ass
1) Grassy ass for the gum
2) Dude I was fucking your mom on the lawn and when we were down she had a grassy ass
by hunz May 14, 2008
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