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20.
Silly or goofy behavior done by a group of friends or closely associated people.

Such silly or goofy behavior is almost always of a good nature, and involves good, sometimes clean fun.

Said behavior will usually happen when all or most people in said group are either bored, hyper, or overly tired.

It can also be identified as the actions done by said group that come about as a result of the friends in such group "getting high off of each other", a phrase used to describe the feeling of being high when around certain friends for a given amount of time, simply because they are awesome and fun to be around and they always have fun together and their company is very much enjoyed.

Shenanigans is also, but less often, referred to as sneaky, deceptive, or mischievious behavior.
1) What happens at CHS when there is a Drama Co. rehearsal AND a Choir rehearsal on the same evening. The break between the two rehearsals often and almost always consists of shenanigans! :)

2)...
*Peter sitting by himself*
*Several friends approach him*
Kim: Hey, man, there's room over there with the rest of us if you wanna join.
Peter: Yes, I'm aware.
Kim: So you wanna sit by yourself like a loner?
Peter: Yeah, I'm fine, thanks.
*Kim and others return*
Leila: What's wrong with Peter?
Kim: Nothing, he just wants to sit by himself, and not join our super-fun shenanigans that we are having.
*All other than Peter (sad face) commence in having a super-fun time of shenanigans*

3) Playing improve games with Nick (happy face). Such games include "freeze", "bang", "atom", "the party game", "psychic battle", etc.

4) Having a dance party outside of the chorus room.

5) Having (and losing) a crab fight with Leila, resulting in accidentally banging your head against a chair.
by Kim Suizdak March 12, 2011
 
1.
Deception or tomfoolery on the part of carnival stand operators.
"Officer Barbrady, I call shenanigans!"
by J W Fokker October 17, 2003
 
2.
An official declaration made by patrons of an establishment who feel they have been cheated. Once a charge of shenanigans has been accepted by an authority figure, said patrons are free to assault the owners of said establishment with brooms.
"Man, this WoW GM busted my ass for duping items, and then I catch him hooking one of his friends up with free gold. I'm calling shenanigans!"
by Zeltaen November 01, 2005
 
3.
A restaurant preferred by Officer Rodney Farva*. It is known for serving mozzarella sticks and having goofy shit on the walls.



*from the movie Super Troopers
Captain O'Hagan: I swear to God I'm going to pistol whip the next guy who says "Shenanigans".
Mac: Hey Farva, what's the name of that restaurant you like with all the goofy shit on the wall and the mozzarella sticks?
Farva (from other room): You mean Shenanigans?
Rabbit: OOOOOOOOOOOOOO!
Mac: *hands O'Hagan the butt of his pistol*
by Brad S. April 07, 2005
 
4.
n. Informal


1.

a. A deceitful trick; an underhanded act.
b. Remarks intended to deceive; deceit. Often used in the plural.

2.

a. A playful or mischievous act; a prank.
b. Mischief; prankishness. Often used in the plural.
Stop your shenanigans! Retighten the lids on those salt and pepper shakers!
by LunaCyn December 16, 2004
 
5.
A form of calling somebodys lie, rather than saying "bullshit."
Jack: Dude where were you yesterday?

Tom: I was at a funeral in Virginia all day man, im sorry i couldnt come over.

Jack: I call shenanigans, i saw you walking down the sidewalk yesterday.
by killerFuzzball October 28, 2008
 
6.
n. Acts of misadventure or playful mischief. Frequently involves Lemmiwinks, 1 beer, and Sharpies. May result in speeds in excess of 88mph and size 14s if a lamb's pit is involved. NOTE: Dropping a deuce on someone's porch is not to be ASSociated with shenanigans, but rather the filthy, dirty south.
Brian Shimek frequently time travels before, during, and after acts of shenanigans.
by Braxtron May 08, 2003
 
7.
synonomous to bullshit (aka. shens)
I call shens!
by aolHater June 10, 2003