A person, place, event, or contextual situation that is worthy of being posted on Instagram; a term specific for Gram curators and unnecessarily artistic users.
"Yo homie I was making the most ballin breakfast this morning and I just had to post it in Instagram."

"Homie, that is not grammable."

"Shit, but my cat doe—"

"Nah homie."
by Trek. March 17, 2013
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