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a term used when a member of one sex spontaneously spends the night with a member of the opposite sex in a non-platonic way, usually following a night of bar-going or after a fabulous date.
You have no toothbrush or extra clothes. You have to wear what you wore out the night before. You should also add that you usually get dropped off in a random parking lot where you left your car, if you can remember where it is. (see term 'walk of shame')
by Vanessa * Leigh June 17, 2005
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1. the act of taking a massive shit and jacking off at the same time, not necessarily while the shit is still coming out
2. to build a grand shack
3. to get smacked in the bathroom
1. I was shacking and shacked all over the stall door!
2. I'm shacking right now, can you get me some more wood?
3. Angelo was shacking yesterday, the wanker.
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by leechu September 16, 2018
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When a slampiece spends the night with her frat-daddy in his cold-air. Usually does the walk of shame home in at least one article of his clothing.
Girl 1: Hey where were you last night? I didn't see you in your bed.

Girl 2: I was shacking with my frat-daddy!
by AXO Princess January 05, 2011
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The definition of a platonic-overnight stay is not the meaning of this word. Shacking means that an unmarried couple is in a sexual relationship and they live together

See also playing house.
Me: Mom, where's Joseph? Haven't seen him in awhile.

Mom: Oh, he's shacking with his girlfriend.
by Canned Coolwhip February 12, 2011
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The act of staying at someone else's house overnight, in order to make a person jealous. You don't necessarily have to do anything sexual, just as long as the other person thinks you did.
You want to make her jealous, you need to find a girl to shack with.
by Tensor March 15, 2005
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Oh i went shacking last night and it was the best shacking ever
by Anonymous September 23, 2003
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Lying on some type of furniture, preferably of a futon nature. Usually two females, or one male and one female. Involving talking, bonding, and much fun but on an entirely platonic level. Powwowing is an exceptable activity while shacking.

*NB. Usually only possible by males of a mature personality. Females do not have these kinds of issues.
Hey wanna shack tonight? Sure, let's go hit the futizzle. I need a break from these exams.
by Rukku December 09, 2003
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