Man up. 

To conduct one's self befitting of a man deserving of a fine piece of trim.

John C and Ralph M watched as a sniveling young punk cry like a school girl while watching his women knob down on another man. John C turned to Ralph M and stated: That mother fucker needs to MAN UP. Derived Mid 1970s NJ.

Man up. by questor1 August 6, 2011

Man Up 

Don't be a pussy, brave it, be daring.

"Hey man, finish this bowl."
"No dude, I'm baked as it is."
"Come on pussy, man up."

Man Up by a dizzle pizzle June 21, 2003

man-up 

to build up enough courage (usually for men) to face adversity and responsibility

When someone man-up its shows maturity and increases respect from society.

man-up by Gerard Irick April 16, 2010

Man up 

-Verb-

1.) forget about your problem(s) because you were born with a penis, therefore it is not important to anyone that you have any problem(s)

2.) take a risk that you know is against your own interests because someone else thinks you should based on the fact that cannot carry a child to term you disposable motherfucker

3.) be silent and accept your suffering because you have testicles

4.) earn your worth because you don't have a womb and your sperm is dime a dozen.

Examples:

1.) Your wife took your kids, house, is collecting alimony and child support while denying you any access to your children. Why don't you man up, quit being a baby and take the gun out of your mouth? I'm still alive and Iv had to deal with much worse.

2.) Get up soldier! You are here to do a job and it doesn't matter if there are machine gun nests up on that hill! Man up and get up there, thats an order!

3.) I cant believe you cried when your have got smashed in that machine. You should learn to man up like the rest of us.

4.) I don't care how hot it is down in the boiler room. Man up and get back to work you pussy.

Man up by Grievous Scopion August 26, 2013

man up 

to fulfill your responsibilites as a man, despite your insecurities and constant ability to place yourself in embarrasing and un-manly scenarios.

Paul forcefully imposed the bet on everyone, yet he was the first to fail miserably on the very challenge he had conjured up.

Paul must now man up and meet his own challenge.

man up by ElMadman July 20, 2005

man up 

strap on a pair, grow some balls, stop being such a complete and utter wuss.

"I can't.. believe.. she dumped me.. again! This is awful. I've been crying so much."
"Jeeeez. Man up!"

man up by AJ_legend February 23, 2008

Man Up 

Be strong

Take control, take control of a (the) situation, be strong, rise to the moment

Man Up by Fields June 12, 2002