I've been removed from the university scene for a long time, and I'm hearing this term thrown around a lot by the younger guys in my office.  I also heard it on South Park.

Tumblrina diction. That's all you need to know.

Spoiler

Spoiler

this sort of thing

So ignorance and/or passive-aggressiveness.

Small, typically unintentional expressions of discrimination or bigotry towards another person.

Quote from: Prime Megaten on January 06, 2016, 10:45:37 AM

Tumblrina diction. That's all you need to know.

it's actually literally just a matter of social etiquette and politeness, but w/e

i wouldn't ever use the term "micro-aggression" because that's gay as fuck, but i still know not to say dumb shit to people

I mean, it seems like a pretentious way of calling someone passive-aggressive, but the examples you posted look more like outright ignorance manifesting as prejudice.

I have a friend-of-a-friend who thinks bisexuality is just not wanting to admit that you're gay; he doesn't hate gay people, he has gay friends. He just doesn't understand it. I wouldn't say that him saying "you're either straight or gay" is being aggressive in any way.

I don't know, tangent aside, it just comes off as another means to dismiss someone without actually responding to them. It's pretty clear that it implies hostility, without saying that someone is hostile.