Share devil

One who shares stuff on social media that is daring, controversial, etc.
Derived from dare devil.

Did you see that link ed shared about all the police shootings being racially motivated? Boy he is a real share devil!

Hair share

When one person, usually with short hair or no hair, drapes the hair of another person, who has long hair, over their own head in a kind of Bobby Charlton comb-over by proxy. This can give the follically challenged the illusion of hirsuteness, even if it is only temporary.

Hey Fred, Tinas coming over, quick lets hair share so she doesn't notice I'm as bald as a coot.

wear share

Any shared photograph of someone in their underwear.

The chick asked to see my body so I sent her a wear share.

shared mattress

A girl that sleeps around, whom "everyone" can sleep with.

Derived from a Norwegian military expression "felles madrass" .

That girl Megan is such a shared mattress, did you hear that she slept with 5 different guys at her last party?

Shared universe

A shared universe is a fictional universe in which multiple independently created works are set. One or more authors may contribute works to a shared universe. The works within the universe may share characters and other story elements, with or without continuity. Shared universes can be found in literature, comic books, films, television, anime and manga and are most commonly seen in fantasy and science fiction genres.

A good example of the shared universe in action is this after-end-credits scene from the film Iron Man (2008) where Tony Stark (Robert Downey Jr) and Nick Fury (Samuel L. Jackson) cross paths for the very first time:

(after end credits)
Tony Stark: (arriving home) Evening, JARVIS!
Jarvis: (voice distorted) Welcome home, sir...
(Stark stops as he sees a figure in his living room)
Nick Fury: "I am Iron Man". You think you're the only superhero in the world? Mr. Stark, you've become part of a bigger universe. You just don't know it yet.
Tony Stark: Who the hell are you?
Nick Fury: Nick Fury. Director of SHIELD.
Tony Stark: Ah.
Nick Fury: I'm here to talk to you about the Avenger Initiative.

Binge-Sharing

Sharing numerous memes or chain posts on Facebook or other social media in one short period of time, usually because you got bored and can't stop scrolling down your news feed.

"Oooh, puppies! My friends would love this vid."
"OMG this cat pic is so cute! Share."
"This could really promote social change."
"This riles me up, therefore EVERYONE needs to know about it."

Sorry, I got trapped in a cycle of binge-sharing.

Sharing Air

When a person yawns and starts a chain reaction, thus "sharing air." Also to the point where you return the air and the person that first engaged in the act is now the reciever.

Steve: (Yawn)
Fred: (Yawn) Da(yawn)nm you shared air. (a form of sharing air)