to have partied to hard to the point where you are to sick to continue the party. To sit your ass on the grass refers to having bit off more than you can handle while partying, and being unable to party anymore.
Ex. 1 - Man I had to sit ya ass on the grass the other night you went to hard on the alcohol.

Ex. 2 - I sat your homeboy on the grass the other night, he thought he was tough enough to hang with the big dogs.
by rollicasspeindeks October 2, 2011
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Doing none to very little work, and the work you’re doing is pointless.

Working very little but looking busy.
Dude, how’s your job going?

Not bad, just been dragging ass and sweeping grass.
by Jack_Mehoff_69 August 18, 2021
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When a man is fingering his gf with 4 fingers in her ass and on the thumb a razor is taped on and he proceeds to shave your pubes while simultaneously fingering her asshole
Hey Bro! I heard you did 4 in the ass 1 mowing the grass with your girlfriend last night before eating her out! Awesome!
by tinytingle December 26, 2020
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This day is on November 15th, fellas on this day you eat your girls ass and spark a fat blunt after
November 15th is national eat ass and smoke grass day, the day all guys must eat there girls ass and spark a fat blunt afterwards
by TedyTSN November 4, 2019
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In the Bible, the phrase ''all flesh is grass'' occurs. Meaning that life is fleeting.

Somebody rang the changes on it, and so, ''your ass is grass'' comes about. A gaudy threat, or a prophesy of coming misfortune.
"If you snitch on me, your ass is grass"

"The platoon sergeant says Smith's ass is grass when the CO finds out"
by Mors Profundis December 3, 2016
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