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The act of being obsessed with the blogging website, Tumblr, and revolving your entire existence around it. Symptoms include drawing all over your skin with Sharpies, saying the expression "On Tumblr..." more than three times a day, taking a strange liking to triangles, using vocabulary you wouldn't normally use, and taking pointless pictures of yourself in order to get more "likes" and "reblogs"
Susy: Tumblr has been down three days...I'm miserable!
Jillian: WTF, you've been tumblrized.

Rachel: Mom, I saw this book on Tumblr, can I get it?
Mom: No! You're obsessed. You've been tumblrized!
by poppypoppy December 26, 2010