Ninja Sack

A prank that is pulled usually in high school by taking someone's back pack, taking everything out, turning the backpack inside out and putting the stuff back in.

Dammit! The seniors ninja sacked me again.

by YarmouthClippers June 13, 2009

net sack

A term used to describe the virtual balls of people who trash talk in an online thread because they know you can't throttle them through the screen.

"Billy is quiet and indifferent in a crowd, but online he has a net sack the size of an elephant."

by TheGhostrider420 August 7, 2014

sail sack

When your scrotal sack sticks to each side of inner thighsl usually due to long term sitting or swass and when you stand up it resembles the full sails of the Black Pearl.

"Man, I was working in the office all day and when I got up my sail sack had me thinking of my next vacation."

by rounder222 December 23, 2006

Sack and Whack

Stuffing your balls inside a vaginal cavity like packing a pipe with your thumb while jerking off onto declared body part such as stomach or back (if flexible). Also called "sack n whack".

Hey babe, mind if we sack and whack on your back while I read phrack on your mac? k thx hun.

by deadly muffin November 16, 2010

sack goblin

A person who loves to gobble on ball sacks.

Karl's a sack goblin. He still swings from Skool Boy's sack.

by Proffessor Wizzy June 18, 2008

FB sack

When you have balls the size of church bells to post something on Facebook that will literally piss off 8 out of 10 of your friends such that most of them unfriend you as a result.

Mich: OMG did you see Phil's post on Facebook? He literally said no wonder we are a country full of P's responding to all the democrats crying that Hillary lost to Trump. Now that's FB sack!
Pills: STD standard

by 1337c0d3d00d November 11, 2016

Stiff Sack

Being a boring/square person, not being involved in group activities

Chris doesn’t want a shot, he’s being a proper stiff sack

by Sandra, Holly, Emily, Chris April 30, 2021