A website, a place, and a language.
"I was up all night on Tumblr reblogging pictures of tea."
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Frank:

"Oh my God! Bob! I haven't seen you in years! Where have you been?"

Bob: "Tumblr."
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A language that is sometimes used in the real world. Which results in confusion, because it's like sarcasm, but doesn't make any sense. Or it's just a scramble of random letters.

"What the actual fuck?"
"OMG I CAN'T EVEN."
"I'M DYING."
"asdfghjkl"
"Wat is this I don't even"
by aeb October 5, 2012
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Tumblr is an website of acceptance for EVERYONE! (unless you're a white straight male then fuck you patriarchal scum)
Tumblr is a community of emo teenagers who circlejerk on first-world problems while calling themselves cats. It has slowly become more and more inbred, to the point that the huge community in it believes to be the best community on the entire web, while the rest of the internet looks at it with fear and disgust.
Person 1: I just stayed all night browsing tumblr!
Person 2: Lol you have no life
Person 1: Did you know there are 89 different genders?
by Tunsku November 27, 2016
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A virus that will infect and crash your computer
wow i just got a tumblr yesterday and it crashed my computer
by belieberrrrrr August 7, 2011
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A virus. Don't get one.
annoying facebook girl: omefggzzz wutz tumbler?! I whant wun!!!1111!!!!111111!!!!!ONE!!!!!!

me: Tumblr will put viruses in your computer and leak your information. Dont get one, I beg you.
by imagiinarium June 2, 2012
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The place where all feminists, 12 year old girls, and homosexuals collect together. They attempt to bring justice to society, however fail miserably, as their little politically correct hearts cant handle the reality of this world.

Tumblr is also a place to tell everyone how you are terribly offended by the smallest of things, such as your pancake being 3 degrees colder than it should be.
Timmy: I've been to Tumblr today! It is such a wonderful place! Nobody cares that I'm homosexual! I can finally be myself along with so many overly liberal politically correct people!
4chan user: Faggot
by Dr.Pepe December 23, 2015
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The online meeting place for both liberal and conservative radicals, though the liberal ones are more common. Both groups pollute an otherwise decent website with dumbass statements like "Kill all teh men!" or "Rape isnt that bad, Jesus even said so!"
Tumblr: You'll never find a more wretched hive of scum and villainy.

Radicals of any kind make Tumblr kinda suck sometimes.
by HolyProphetOfTruth November 19, 2014
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An online blog site where fatty's, hamplanets and mini moons gather to make themselves feel better. Usually associated with fat acceptance, thin privilege and cake retention instead of water retention. Also related are the terms, healthy at any weight but not to exclude, a scale is just a number.
Chestbrah: Did you see the new fat acceptance blog on Tumblr.
Zyzz: Nah brah, don't have time for that.
Chestbrah: Understand, let's hit the gym and check our privilege.

Zyzz, Chestbrah:LOL....HAHAHAHAHAHA
Zyzz: Let's get a double scoop of D-Bol
by Grapeap November 8, 2012
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