A slang term used to define women's breasts. Usually big ones which stand out and grab the attention of all guys as if they were checking out other guy's packages in a locker room.
Emily: "I'm going to punch you in your up-nuts."
Ashley: "Go ahead, they're still bigger than yours."
by 3rikasan February 10, 2012
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when your nuts are located just above the penis......(up-nuts)

usual found in public urinals.
Man 1 "dude have u noticed your balls are just above your penis"

Man 2 "don't fucking laugh dude, i've got up-nuts!!!"

Man 1 "Hahahahaha....powned"
by Venureva October 7, 2006
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After a guy blows his load; either solo or in the company of a tight pussy, and then blows another in succession.

The nut is only considered a follow-up nut, if two key pieces of criteria are met:

1.) The nut must be blown in the same session as the previous.

2.) The refractory period must not exceed 10 minutes in length, before the successive nut is ejaculated: “t > 10 = FUN”.

Should all criteria not be met (i.e. the refractory period exceeds 10 minutes in length; or the successive nut is blown in a future session, the nut is not to be considered a follow-up nut but instead falls into the classification of “The law of iterative nut busting”).
Dude, last night I blew a fat load in my wifes pussy and the pussy was so good that she squeezed out a follow-up nut which completely drained my sack!

After last night, I have been shooting blanks.
by Chumplemonks June 23, 2021
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To be straight up or have the courage to tell some one something to their face
"Yeah she told him he was an idiot with no sense of fashion"

"She must be up the nuts" or "shes up the nuts"
by Mhurr January 23, 2008
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hybrid cross between "grow a pair of nuts" and "man up"
Guy 1: "Oh man, I totally wanna bang that chick over there."

Guy 2: "So nut up and do it already!"
by LOVEMESOMEURBAN October 16, 2010
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I'm was so mad, I was nutting up in there!
Why don't you try nutting up and ask her to the dance?
by Melhon96 January 7, 2016
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Dan, Jay and Jeff came out of the corsey and saw some hot girls. Dan and Jay said "hi!!!111oneone" and Jeff said "nut-up!" The girls drove by and flipped us off.
by dFecT June 3, 2004
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