A bastard deviant child of Socialism and Self-Victimization where one claims they support the building of a socialist state, without providing the means of doing so. A substantial amount of the ideas used to support Tumblrism were conceived during collective conversations on Tumblr (particularly Tumblr safespace).

Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)

A form of escapism from reality by using Tumblr all day and night.

When somebody is addicted to Tumblr. Meow. The thought that your life wouldn't be right without it.