Tumblurking 

Someone who is a lurking on Tumblr.

I fell in love with the 19 year old version of Tina Fey while Tumblurking today.

Tumblurking by nicognito February 27, 2010

tumblring 

The act of being on tumblr for hours and hours.

I was tumblring so hard last night I forgot to sleep but it's okay because I dipdyed my hair and got an american flag tank and combat boots, I'm a hipster now!

tumblring by wannabehipstah January 20, 2011

Tumblring. 

What cool people do.

Im Tumblring. Right now.

Tumblring. by Yoooooooooooooooooooo. September 26, 2010

Tumblring 

1. To look blog from blog on Tumblr because of sheer boredom.
2. Going on Tumblr just to look at funny picture or posts.

Tony - What are you doing?
Ebs - On Tumblr
Tony - Oh you mean you're Tumblring?
Ebs - Yup!

Tumblring by Rekarnated May 20, 2010

2013 Tumblring 

Verb-

(2013 tumb-ler-ing)

Back in 2013, tumblr.com was just getting popular with a younger age group, scene and emo kids, the LGBT+ community, weeaboos , and hipsters . All of these groups combinded made the website a little unstable. Anyone with an opinion would get death threats, anyone who didn't ship two male characters were seen as homophobic, and if you didn't like tumblr then you would get thousands of 13 year old trying to convince you that they know how to hack computers and kill people.

Fandoms such a homestuck , SuperWhoLock , and various different anime became the head of tumblr in 2013. This caused problems, as they often went out of control. Stories people in homestuck cosplay attacking people with buckets (as it is a reference to the comic) and girls as young as 12 sending nudes to the many different adult male actors became common, but we're brushed off by tumblr.

2013 Tumblring refers to the attitude that people had during Tumblr is 2013. Acting like Tumblr is the best and if you disagree then you are wrong. Always being hyper, out of control. and pretending that you aren't responsible for your actions. Even though the website has grown up, there are many people today who are still 2013 Tumblring.

Mark: I got into Supernatural recently!
Fred: Eh, 2013 Tumblr ruined Supernatural for me
Mark: But 2013 is over now, I doubt there's anyone like that anymore
Fred: You haven't looked hard enough if you can't see atleast 3 people at school who are still 2013 Tumblring

2013 Tumblring by PeanutbutterPenis January 14, 2016

Tumblring 

Basically the act of being on tumblr until 4am on a school night

"Why is Clare so tired?"
"She was up all night tumblring"

Tumblring by Society-Killed-Me June 18, 2014

Tumblring 

(V.) The act of surfing Tumblr porn for inspiring sexual ideas

Tumblring is both a fun and informative past time.

Tumblring by JMM789 April 5, 2017