A person who gives way too much information without request.
Lisa is such an oversharer!
by Red Crane November 25, 2013
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People who can't stop posting pictures and videos of their children, preferably toddlers, on the internet.
"Did you see the new 50 photos of little Max on Facebook, smearing a chocolate cake all over his face?"
"Yeah, the parents had some real oversharenting going again..."
by TechPreacher March 18, 2014
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An exclamation in response to one who has pinned the meter on exposing too much personal information, usually to a group of people not commonly interwoven with one's personal life and activities.
"Did you hear Fred relate his Friday night encounter at today's meeting? Definitely Oversharing!"
by marcjp August 13, 2008
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When you get so drunk you tell a good friend about the time you were crazily in love with an adrogynous looking person who later turned out to be a female. Because of this revelation your drunken confession delves into epiphanies about your latent homosexuality then skips to your past crushes on (and platonic affairs with) older married people before finally detailing your favorite methods for having pillow sex. Instances of oversharing are often followed by headaches, embarrassment, feelings of vulnerability, extensive journaling and/or therapy and (sometimes) long walks alone to find yourself.
You: "...and that is ultimately what led me to realize that I might be gay. Not gay in the David Bowie sense but gay in the bi-curious way. I mean, aren't we all? I want to have a married best friend, but a friend of the same sex who you harbor sexual feelings for...there's just something exciting about that. I guess I've never really admitted this to myself. All the emails, and "dates" and trips with Katie Couric were obviously leading somewhere, but there's something I felt about my male friends that was just... It's like the time in college when I took LSD. I was turned on by the risk of it, like riding a rollercoaster without a safety harness. I mean, I sort of knew I would come out OK afterwards but I also..."

Your friend: (to him-or her-self) Sheesh! what an oversharer. I wish I had a tape recorder.
by Tim Jerome October 13, 2008
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When you get so drunk you tell a good friend about the time you were crazily in love with an adrogynous looking person who later turned out to be a female. Your drunken confession delves into epiphanies about your latent homosexuality, your past crushes on (and platonic affairs with) older married people and your dabblings in suicidal behavior. Instances of oversharing are often followed by headaches, embarrassment, vulnerability, extensive journaling and/or therapy and (sometimes) long walks alone.
You: "...and that is ultimately what led me to realize that a homosexual romp with a married best friend could be a character building experience instead of a moral transgression. All the emails, and "dates" and trips were obviously leading up to something. It's like the time in college when I took LSD. I was turned on by the risk of it, like riding a rollercoaster without a safety harness. I mean, I sort of knew I would come out OK but I also..."

Your friend: (to him-or her-self) Sheesh! what an oversharer.
by Tim Jerome September 17, 2008
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a phrase katie cornish has a mild obsession with saying
"I just had a slice of pizza"
"OVERSHARE! D:"
by mandrizzle May 1, 2009
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The necessity and compulsion to share every single fucking thought or emotion with polyamorous partners, for the purpose of avoiding the minor miscommunications or misunderstandings that may not complicate a monogamous relationship, but which may snowball when there are three or more people involved.

Will cause poly relationships to develop at a ridiculous pace, as nothing is ever kept to one's self. Will also seem really, really crazy sometimes.
Omg I'm sorry I was a little distant just now; I was worried I might feel a little neglected eventually, even though I'm not feeling that way at all right now. I was just imagining how it might feel some day. Also, I kind of resent you for that eventuality.

Fuck, that was quite the poly overshare, huh.
by anya lastname January 20, 2010
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