When you walk in on someone that’s in the toilet, typically because they forgot to lock the door.
I just shellied Dave on the toilet! He wasn’t happy with me.

I’m going to make sure I lock the door before I go to the toilet, I don’t want to get shellied...
by PPN+ December 4, 2018
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When moving a hot tub and it accidently lands on someone, but on the side of the shell so they are not crushed, but stuck in the area where people sit in the tub. They are stuck in the shell with not way out unless they have level 10 turbo power.
Vin: Yo dude, did you hear that Vishnu got shellied last week during a move in Lombard?
Nikhil: Yeah, he couldnt even get himself out. What a fucking pussy
by Whoopi/Hafner nems March 24, 2022
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A living thing (preferably a sea animal), That dies too quickly
Mom? Shelly died again
Aw shit we needa get a new one.
by shellyhater123 November 18, 2021
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While wiping your butt you accidentally get poop on your hand in which you proceed to wipe off on the toilet paper roll leaving for all to find later.
Hey guys somebody just "shelly'd" stall 3, beware!!!
by bonequesha March 30, 2011
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A word defining that time of the month. Personifies extreme moods, and hyper random activity. Can be used as an adjective for both females and metrosexual men.

Also known as a synonym for foursomes,wild sexual activity and heavy alcohol usage.
Oh whats wrong with her ? Nothing, she is going through a Shelly.

I just had a shelly man, it was awesome !
by Mahuda December 14, 2010
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a horrible girl who isn’t fair to others around her, she treats her “friends” with disrespect and likes to control them, she feels as if she is on top of the world and no one can get in her way, she is not the type of person to be associated with, dont be like her
“i was having such a great day until i met Shelly”
“i hate being friends with Shelly because she tried to manipulate me”
by H.1234 July 29, 2019
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