Tumblost 

When some is so into tumblr they forget about the real world

Angelina: "Hey"
Angelina: "Hello?"
Angelina: "Are you there...?"
Brad: "Sorry hunny! I was Tumblost"

Tumblost by Jude228 July 19, 2012

Tumblstalk 

Excessively looking at or stalking someone's Tumblr blog. This can include frequent reblogs of this person's blog posts.

Alyssa seems to Tumblstalk Allicia, as all of her posts are reblogs of Allicia's.

Tumblstalk by californiaflow March 22, 2011

tumblst 

Being the most tumblr

Girl-Damn I'm really tumblr
Girl 2- would you call yourself, the tumblst?

tumblst by lilaclover September 5, 2015

Tumblestuck 

When you think to yourself, "I'll just check Tumblr real quick,"
8 days later you haven't eaten slept, or showered, but your brain is full of dank memes

"dude how did you miss the party?"

"Sorry, I got tumblestuck"

Tumblestuck by levisjeans September 19, 2016

Tumblestone 

A terrible game that is primarily for lonely colourful people

"Jeez, that girl plays tumblestone a lot, I bet she has no friends"

Tumblestone by _sillywilly_ February 14, 2017