shelf friend 

When you become an option. You are not first pick of friends. When your friend starts dating someone and you are put up on a shelf until they have no other people to hang with.

I don't need you anymore, I'm dating somebody. So I'll put you up on the shelf until I have a need for you. You are my shelf friend.

shelf friend by Pix_n_stones July 16, 2017

Shelsy 

Shelsy's are the best in the world, if you have a Shelsy you need to keep her because she will change your life for the better. Shelsy's are the finest people in the world and the best person to be around she will light your day up. Shelsy's never cheats or lies but is always cheated and lied to but she can always replace the guy so it doesn't matter to her.

"Omg i miss Shelsy I wish I never cheated on her"

Shelsy by Baddest Bitch12345 January 8, 2017

Shelfwarmer 

A toy at a store that kids don't want (usually the toy of a sidekick, disliked character or female character, etc) that remains on shelves for months on end after all of the "cool" figures have been sold. Based off of the term benchwarmer

Toy Collector A: Hey, have you seen ROTF Sideswipe lately?
Toy Collector B: Ugh, no, our Target's packed with nothing but shelfwarmers like Arcee and Wheelie.

Shelfwarmer by Mr. Handle November 22, 2009

Tally-Hall-Shelf 

A shelf with tally hall products on it.

Hey wanna see my Tally-Hall-Shelf

Tally-Hall-Shelf by Geueveieh April 13, 2022

Shelly 

A wonderful girl. One that knows the right things to say to make you smile, even when you are at your lowest. A girl who you'd want to make smile just because her smile is one of the most beautiful ones you have ever seen. Her personality is bubbly, and she is a bit weird. Her laughs and giggles are contagious since it will get everyone laughing too. She is one of the most beautiful beings in existence.

Person One: What's the name of that star there? It's really beautiful.
Person 2: I know, it's almost as bright as Shelly.

Shelly by thenewkeeperoftherunners July 19, 2014

Shelby 

A girl who is very sick of being associated with a mustang.

When Shelby googled herself for the 3rd time, she found a plethora of car images.

Shelby by tumblingtomato November 13, 2012

Shelby 

Sweet, sassy, beautiful girl with a kickass smile and a goofy personality. She'll make you laugh with out even trying. She's one badass gal!

Drunk dude #1: Broooo who's that with the nice ass?
Drunk dude #2: Back off man
Drunk dude #1: Why brooo?
Drunk dude #2: Dude that's Shelby! She'll kick you're ass

Shelby by Flint Mathews January 20, 2018