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When you eat a shitload of grass, which doesn't digest, the next time you shit it's almost pure green
example- Nick: Bryan what the fuck took you so long to take a shit

Bryan: I had major fucking ass weed cause i eat grass cause im a fucking cow.
by N53Nick May 13, 2009
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A weed growing from the backside of a person or animal.
These weeds grow more every day.
You are such an assweed!

Look at his assweed!
by Boudewijn November 04, 2003
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