Top definition
To gather up one's courage for a daunting task.
Sargeant Bohannon shrieked at Private Entwhistle, "Sack up, you panty-wearing dipstick...bayonet practice may save your lunge, thrust, stick and twist...repeat...
by harry flashman July 28, 2003
Get the mug
Get a sack up mug for your daughter Sarah.
Jan 15 Word of the Day
The Nussy, or the β€œnose pussy”, if you will, was discovered during the corona virus pandemic of 2020. People that had to be tested for Covid-19 had to have their nose swabbed right where the brain connects, which often led to people rolling back their eyes and gagging.

A nose-swab-fetish developed from this, because we, as humans, ruin everything.
β€œOh fuck yeah, swab my nussy”

Sir, please, I went to medical school

by Pogoextreme December 25, 2020
Get the mug
Get a Nussy mug for your guy Riley.
A demand to be a man and to stop acting craven or cowardly. A derivation of man up (which in itself is a derivation of cowboy up), although more insulting. While man up can be used as encouragement to do something, sack up is almost always a challenge to cease doing something that should be beneath you
"Oh sweet mother of god! The terrorists are going to blow us up with Snapple bottles!" _This_ is terrorism's A-game? Sack up, people.
by Quine August 13, 2006
Get the mug
Get a sack up mug for your coworker GΓΌnter.
You need to sack up instead of crying about your pussy hurting. (see also wah my pussy hurts.
by jaydawg May 27, 2004
Get the merch
Get the sack up neck gaiter and mug.
This expression refers to a man's testicle sack, and is used to demand courage and action from another man. In long from it's equivalent to: Grab your sack to make sure your balls are there, be brave and do-it/buy-it/break-up/etc. In shorthand it's: Sack up and do it/buy-it/break-up/etc.
Democrat's need to sack up and stop the reckless, fear-driven war machine that the Neo-Republican party has sadly become.

Republican's need to sack up and admit that they are afraid of almost everything that is not white and Christian, and that their fear is why they want to drop bombs all the time.

Peggy Noonan in reference to Rush Limbaugh and other right wing pundits:

"But I would say of these men (why, in the continuing age of Bill Clinton, does the emoting come from the men?) who are fighting one another as they resist naming the cause for the fight: Sack up, get serious, define."
by Marko D February 08, 2008
Get the mug
Get a sack up mug for your bunkmate Yasemin.
The figurative act of growing a scrotum and pull of a crazy stunt or to face some sort of tough task
Sack up u pussy and fuck dat bitch
by L-White April 16, 2008
Get the merch
Get the sack up neck gaiter and mug.