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8.
a man's gotta do what a man's gotta do
cowboy up and fight hell!
by steve k... May 24, 2007
 
9.
to order a shot of whiskey
Bruce Lee: Cowboy up motherfucker!
Jose Contreras: I'm halfway to Heavington, but get me a Jim
Bruce Lee: No, get it yourself
by benny b from the bronx August 17, 2007
 
10.
Another incredibly vacuous term that no longer has the same meaning it initially did, thanks to cultural theft and abuse by people who aren't really cowboys at all, but bored, middle-class white people. It used to mean to toughen up or approach a problem with a hard attitude, but now is used to refer to anything requiring effort, or anything in which people are competeing against each other.

People sport the logo on their clothing or their car because they think it gives them credibility as a cowboy or a redneck, since it is now cool to be associated with these groups once again. But when you get down to brass tacks, most fans of the cowboy up marketing scheme are those who have no connection with the cowboy way of life at all. See poser, git er done and white trash.
Jenny thought that putting her "cowboy up" sticker on her SUV would make others think she was a country girl. In reality, most people just laughed at her.
by Eric in NE March 01, 2006
 
11.
An incomplete phrase from Broke Back Mountain meaning "cowboy up your ass".

Oh my god theres a cowboy up! my ass!
by Bob Weadababyitsaboy May 03, 2006
 
12.
The "word of the momoent" for all the hilljacks and cowboy wannabes out there.
145-pound 5'11" Cletus, with Skoal in his lip and t-shirt sleeves rolled up, thumb in the front of his pants says ""c'mon ya'll....cowboy up! let's head on down to the country bar and pick us up some fat hefers!"
by Steve C. January 26, 2004
 
13.
Kevin Millar's pregame chant as he grabs his ankles and takes it in the stink from the eight other starters on the Boston Nine.
Cowboy up, Manny! You're next!
by Eaton Buch May 18, 2005
 
14.
Something that's on EVERYONE's away message right now.
"time to cowboy up"

"cowboy up haha talz, supportin the sockies"

and lastly

"watchin the sox vs As
COWBOY UP BABY!!!!!!!"

(all are direct examples)
by Lise October 06, 2003