nut up

(v.) To gird ones loins. Nutting up entails using one's proverbial balls or "nuts". Mainly used on the US west coast, it's the sister (brother?) term to cowboy up.

I better nut up or I'm gonna get my ass kicked in this fight.

by Neilmiser May 15, 2004

Nut Up

Verb phrase: To involve oneself in a physical altercation, to lose one's cool, or to fly off the handle. A common fixture of urban or "gangsta" vernacular. Recently popularized by a homophobic, black-clad drug-dealing NPC/pedestrian in the controversial PS2 game "Grand Theft Auto: San Andreas."

"Yo, I'm fidd'nduh nut up in a minute!!!"

by Buddy-Rey November 7, 2005

nut up

To suddenly go crazy with no apparent provocation. Especially true with emotional issues that have not been previously resolved but avoided.

"I was talking about waiting another year to get married, and she began to nut up on me."

by CWB August 27, 2005

nutting up

Losing one's ability to control excitement.

My dog is nutting up because I just got home.

by Redneck Hemingway March 19, 2016

nutted up

Freaked out. Stressed. Going a little crazy

I am sooo nutted up about this interview.

by wstsdgrl March 12, 2008

nut up

To go crazy or stupid. To be extreamly fearful.

Don't nut up on me now.

by F.I.D.O. July 19, 2006

nut up

v. To ejaculate. Literally, when one's testis climb to a "high & tight" position just before launch.

Al was about to nut up when her cell phone rang, turning his hard tool into a soft accessory.

by R2dad August 1, 2006