nut up 

to take one for the team, against most odds, to guard closely (in athletic contests) commonly yelled at Ultimate Frisbee games

Yo Bill, nut up and be my wingman tonite

Nut up on that girl, she's been owning you all day

nut up by Texas August 29, 2004

nut up 

To "get high" or alter one's state of mind with drugs or alcohol.

I needs to nut up tonight. I be off tomorrow fo snizzle!
I'm bout to nut up punk.

nut up by tmofft January 23, 2005

nut-up 

n. - an unfavorable or adverse situation

My teacher gave us detention - yo, that's the nut-up!

nut-up by "Cool Aaron" Taylor November 13, 2007

Nut Up or Shut Up 

Either walk your talk and prove your worth or toughness, or keep your pie hole shut and get the hell outta town.

Keep running your mouth...either rise to the occasion and let me thrash your ass when I grab that stack of dimes you call a neck, or refrain from further trash talk. Take your pick!!

Nut Up or Shut Up by weave March 24, 2003

Nut-Up Dick Pic 

A not so typical picture of a dick taOR from approximately knee height (easier to take with longer arms or while squatting) angled in the upward direction in order to showcase both the nuts and dick. Be sure to have an erect dick or run the risk of appearing to simply have three nuts. Be sure to avoid anus, but if not possible, be sure to cover with emoji.

Women love surprise nut-updick pics! OR
Did you get his nut-up dick pic?! What a great angle!

Nut-Up Dick Pic by Hahaballs February 13, 2021

Nut up at the night of my life

Used when something is very good

P1: "Jenny told me I can enter her backdoor dude"
P2: "Oh nice dude"
P1: "Nut up at the night of my life!"

Nut up at the night of my life by lizardkid September 11, 2018

Nut up my brothers 

Squirrel for: Taking up arms (i.e. getting ready to battle).

First coined in the Sears Commercial 'Squirrel Revolt'.

(Man walks in with wife to display a bunch of squirrels cutting coupons for them)
(Head Squirrel flips table)

Squirrel: We're tired of you humans and your tyranny! Nut Up my Brothers!

(Squirrels proceed to attack the humans and vandalize their property)

Nut up my brothers by My pseudonym is already in use October 24, 2013