When a man sticks his finger up his ass-hole in order to tickle his prostate, causing an instant, extreme orgasm. The prostate (looking like a walnut) is commonly used as a sex toy for vietnamese people.
Jose Buisto likes walnutting
by reivergirlala October 2, 2008
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A walnut is someone who hasn't been cracked open to reality. Someone really innocent or naive.
"That bitch José is such a walnut! He doesn't even know what a lemon party is!"
by Pseudonyms 6969 December 11, 2015
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Adjective.

Kind of like nuts, but way more nuts.
Dude. That Ron Artest brawl the other night was freaking walnuts.
by cgp24 December 13, 2010
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A person who likes to shop or hang out at Wal-Mart a lot.
She is such a walnut.
by Bed time April 1, 2010
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Did you see Walnuts' speech last night? You know, the one about inflation. Did he look dead to you or what?
by Iacopus August 8, 2008
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When your nuts are a little sweaty so they stick to the side of your leg. The pre-cursor to itchy nuts.
"Dude, it's so hot in here I got the worst walnuts."
by Jawn May 29, 2005
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