A man that is covered in grass and has power over all things.
by I am grass September 30, 2018
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another code term for when girls are around. grassy knoll aka a womans vagina.
I'd like to shoot a load on that grassy knoll
by Captain Tanker February 01, 2008
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The hang out spot for the kids of Clone High High School.

Frequent visitors: JFK, Cleopatra, Abe Lincoln, Joan of Arc, Ghandi.
I wish I went to Clone High High School so I could hang out at the Grassy Knoll with all the famous clones.
by POMLOVE August 19, 2006
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The landform from which JFK was shot by a woman.
Today I drank South African soft drink atop a grassy knoll.
by miguel juan October 31, 2005
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To interrogate and scrutinize one fact or situation beyond the point of sanity.

reference: to crackpot insane conspiracy theorists on the JFK assassination.
Dude #1: I have to prove that Jess really is the one stealing my toothbrushes when I sleep!!

Dude #2: Don't you think your mowing the grassy knoll on this one?
by popcornrules October 23, 2008
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