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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.
sack up by Quine August 13, 2006

Rape Shack 

A Rape Shack is a house, basement or a generally run down premises which is regularly used to rape people/ animals in.
Davey took Bobby in to the rape shack, and did the wrong thing.
Rape Shack by like a piano layk December 31, 2008

sack of potatoes 

When getting into your bed at night and realize your child has decided to hide in the form of a sack of potatoes.
Look honey there's something in the bed is it a sack of potatoes again or maybe it's Staci...
Someone looks so good you could eat them, not in an innocent way.
Snack by PotatoesAndCockumbers August 29, 2018

Boo Boo Shmack

Weed Marijuana. The term Boo Boo Shmack can be broken down into the three words that make it. Boo, Boo Boo, or just Shmack. The "Sh" must really be pronunciation as to not be confused with smack (an unrelated term)
1) Yo mang pass that boo.
2)Ready to Shmack out?
3)Boo boo time ma'fka!
4)Holy cow mang, this is some extremely potent Boo Boo Shmack
Boo Boo Shmack by yellowGZ November 18, 2009

Sack Slapper 

Poop that is so big, when it is on its way down it slaps your sack.
When your turd hits the back of your nut sack its like the two things guys pride them selves on most high five each other. Thats a sack slapper!
Sack Slapper by Handyandy12345 January 20, 2009