The act of talking to a friend or peer who is taking a shit.
Person 1: *answers phone* "hello"
Person 2: "hey, whats up?"
Person 1: "nothing really, just sittin around."
Person 2: "WRONG! your gatekeeping again."
Person 1: "ewwww"
When someone takes it upon themselves to decide who does or does not have access or rights to a community or identity.
"I love punk bands like Green Day!"
"Ugh, they're not even punk. They totally sold out."
"Oh man, I love Harry Potter. I am such a geek!"
"Hardly. Talk to me when you're into theoretical physics."
"Erika Moen is my favorite queer cartoonist."
"She's not queer, she married a man!"
"Quit your gatekeeping. No one died and made you Queen of the Gays!"