a virus. don't get one.
"hey, what's a tumblr?"
"oh man, it's a virus. it sucks, don't get one"
"oh em gee, thanks for telling me!"
by we'llbebackshortly February 1, 2011
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A site where you can re-post pictures from all over the internet and claim that it's yours.
I steal shit from Reddit, 4chan, and other sites and post them on Tumblr and become "tumblr famous"
by ruupert July 13, 2011
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A place on the internet where pretentious try-hards who think that they are smarter than everyone else just because they watch Dr. Who gather to brag about how "nerdy" they are because they play Pokemon. The people on this site also love to claim that they are bisexual or have a mental disorder so that they can get attention.
Tumblr user 1: I'm bisexual and I hate society! ...PLEASE PAY ATTENTION TO ME!

Tumblr user 2: I play Pokemon and watch Attack on Titan and My Little Pony and Dr. Who; I’m such a nerd! Haha nerds for life! XD ...PLEASE PAY ATTENTION TO ME!

Tumblr user 3: Guys, I think I have OCD and aspergers! These mental disorders that I diagnosed myself with make me different and special, so DON’T JUDGE ME! ...PLEASE PAY ATTENTION TO ME!
by dynomioshin June 18, 2014
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teen bloggers posting fake as fuck social justice stories for internet pointz and lel SO QUIRKY boys pretending to be gay to oppose their FUNDIE CHRISTIAN parents
tumblr stories are less believable than those not always right stories
by lardlord November 27, 2013
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you just won't understand.
Tumblr is life and culture.
It is the epitome of culture and the total antithesis of the modern day pop culture which is so ingrained in today's children. There is no possible way to explain such a phenomenon to others.
You either get it or you don't.
by freddie-bren October 3, 2010
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A website with period blood smeared all over it. It's where people go to vent or hibernate for hours on end. It's where various phrases and contagious memes are spawned.
"Holy shit! It's 3 am and I've been on Tumblr for 5 hours"
by ImSlimShady November 10, 2015
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