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15.
General uproarious fooling around meant to engender cascades of hilarty in the viewers as well as in those engaged in such riotous behavior.
"I know you guys are havin' fun," bellowed Old Man Hornaday, "but I'd be pleased if you'd take the shenanigans somewheres else if you don't mind."
by Old Man Hornaday September 13, 2009
 
16.
When someone states a fact you call shenanigans and they have 48 hours to prove it and if they don't you kick them in their genitals
John: I'm going to fly to the moon

Gary 'von douchebag: Shenanigans
48 hours later

Gary 'von douchebag: did you go to the moon

John:NO

Gary upercuts John with his foot strait to his genitals
by Gary hater 89 October 31, 2009
 
17.
Calling Bullshit.
1:"I fell out a roller coaster at the weekend"
2:"I call Shenanigans"

3:"Oh Shenanigons, I really fu**ed up this time."
by Awkward. June 07, 2014
 
18.
Mischievous activites.
Now commonly used by hipsters to in place of fun trying to seem cool. Instead they look like douchebags.
Hipster 1: We were in SoHo and got into some shenanigans!

Hipster 2: That sounds so fun!

Non-Hipster: SHUT THE FUCK UP DOUCHEBAGS!
by kikis3xy July 01, 2010
 
19.
Random adventures of an often silly and/or odd nature undertaken after having consumed too much red bull/V/any other caffeinated beverage, and aften carried out at the very early hours of the morning with fellow red bull/V/caffeinated beverage drinkers.
Person 1 - So I gave up on my homework by 3am, after drinking a whole lot of V, and Fred, sue and I went on random shenanigans
Person 2 - such as...?
Person 1 - taking random photos of ourselves standing next to post boxes with postage stamps stuck on our faces...
Person 2 - WTF?
by kjd_pferd August 26, 2006
 
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
 
21.
Usually the result of a bizarre night or encounter that ends in some timeless story.
The other night I bartended at this frat only to wake up the next morning in the attic with three topless girls and no memories... I wonder how I get myself into this type of shenanigans?

A: Dude I know this guy who can get us in to this party at this club in Miami for New Years break.
K: No way! I can only imagine what kind of shenanigans we can get in to.

or the classic...
I have to tell you about my shenanigans the past few weeks
by shen man December 06, 2009