Top Definition
OTD: when someone loves tumblr so much they become addicted, delete their social life, live forever alone, eat a lot, and have more followers than friends.
Boy: Hey Lindsay, will you go out with me?
Girl: Sorry can't my Obsessive Tumblr Disorder says I'm not allowed to have social interactions outside of tumblr. :)
by tumblrloverOTD January 07, 2012

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