tumblr syndrome 

A developmental disorder acquired by spending excessive amounts of time on tumblr, characterized by simultaneous enlightenment and ignorance. Due to its nature, it is extremely difficult to self-diagnose, as affected bloggers will dismiss the symptoms almost immediately after noticing them. Those affected will write about the equality, value, and experiences that every human shares, while isolating themselves through a declaration of hate for everyone in the world.

Incidences of tumblr syndrome include:

toinfinityandbeyond: "insert thoughtful insight here"
youvegotafriendinme: this (and/or) yes
toinfinityandbeyond: I just don't fucking like anyone

youvegotafriendinme: I'm a single, attractive, intelligent, remotely sane female from New York.
toinfinityandbeyond: No way. I'm single, attractive, intelligent, remotely sane male from New York.
youvegotafriendinme: Were going to be along forever aren't we?
toinfinityandbeyond: That we are.

tumblr syndrome by TheTwoFingerSalute September 9, 2012

Tumblr Down Syndrome

Tumblr Down Syndrome occurs when "edgy" teenage attention whores spend all their spare time on Tumblr.

Symptoms include:
1Feminazism
2Cutting ones own wrists in attempt to appear "edgy"
3Hating on cis white males
4Believing "cis" is an insult
5Writing shitty poetry

ie:

Roses are red,

Violets are blue,

I want to kill myself.

6Listening to "obscure" bands such as mcr an 5sos
7Hating on one for having an opinion
8Creating cringey/cancerous fandoms
9Spewing bullshit via keyboard
10Pretending to be LGBT to appear "cooler"

Guy1: Hey ,You talk to that semi-gorgeous chick over there?
Guy2: Yeah, but it turns out she's got Tumblr Down Syndrome, you'll never get her.

Tumblr Down Syndrome by Ni11ioN June 10, 2016

tumblr red nose syndrome 

Tumblr red nose syndrome is a common trend on the art style of tumblr. It is when a nose is drawn with blush, like if they are blushing or have a cold. The thing is, they aren't blushing. And they are not sick. It is just considered part of a style, a very common one.

Mary: Oh hey that's a cute drawing!
Rose: Yeah, too bad it has tumblr red nose syndrome.

tumblr red nose syndrome by FeelingPunk February 22, 2017