An absolute overload of TMI, also known as Too Much Information, sometimes coming from one person but usually from two or more. Generally what is known as ordinary TMI develops into a TMI Fest when the victim of Too Much Information is forced to be in close quarters or within earshot of those who are sharing things that, really, you could have lived without knowing about. An example of such a place would be a bus (or any form of public transportation), a lunch table, a noisy classroom, etc. There is no way to get away from the excessive amount of inappropriate and disturbing statements coming at them from all directions, and so they become bombarded with TMI as a result.
Person 1: I had the worst bus ride today... The girl behind me started talking to her friend about her horrendous PMS. Then the Stinky Scene kids sitting in the seats around me all started discussing drug use and their frequent made-up sexual encounters with one another.

Person 2: Ouch. Glad to see you pulled through that.
Person 1: I'm surprised I did. It was a regular TMI Fest.
by Lyosha September 12, 2009
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The act of holding up the palm of your hand and spreading out all five fingers, while placing your other hand in the center of the opposite palm with fingers spread, with your thumb sticking straight up resembling a turkey. To explain in hand motion, when someone has given you Too Much Information.
Tom: Hey Jane, I just took the biggest dump ever!
Jane: (TMI TURKEY) WoW, Tom, um... thanks?
by Joshua Nelson March 6, 2007
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Tmi Tuesday is an event on Tumblr that occurs every Tuesday. People either ask you really personal questions and you answer them, or you say something about yourself that is really personal.
Girl: It's tmi tuesday! Let me see what tmi's I have today.

"What is your biggest turn on?" - anonymous

Girl: Oh Tumblr, how I love you.
by TrainTrackVeins July 31, 2010
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A reference to some bit of incredibly personal information that is intensively calibrated to thoroughly fuck the minds of the user's audience.
Person #1: "Getting any baby-urges yet?"
Person #2: "Ugh, NO. My uterus just curled up on itself like a millipede."
Person #2's Lover: "Is that the thing you were doing last night, with your Kegel muscles?"
Person #1: Jesus CHRIST you're like a goddamn Predator drone. You wait for (her) to set you up, and then you come in from outta nowhere and drop a fuckin' tactical TMI on my head.
by Tweedletilde May 27, 2010
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Meister of TMI ( too much information)

Someone who constantly shares too much information about every aspect of their life. And/or someone who updates their status on social media with their actions or whereabouts all day long.
Jenny is a TMI-ster, did you get her text about eating too many hard boiled eggs and getting the runs...

You might be a TMI-steer if your Facebook Status looks something like " woke up at 5 am, did 50 squats, ate an egg white omelette with spinich, arugula and chia seeds, now headed to the gym to work on my glutes..."
by RedHandedJill84 April 1, 2016
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"Too Much Information; don't read." Similar to tl:dr, except that it doesn't have to be long.
LJ post: "I had a sex dream last night. TMI;dr."
by Hexeengel May 4, 2010
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TMI(too much information) statement that causes extreme discomfort to all hearers.
can be related to a tactical nuke of unwanted information
"JESUS CHRIST your like a goddamn predator drone. you wait for dora to set you up, and then you come in out of nowhere drop a fuckin' tactical TMI on my head"
faye

number 1672: Unmanned Aerial Marten
questionable content
by QCfan May 25, 2010
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