A poor driver. In California, this person is usually Asian.
Watch out! There's an accidental in that Lexus in the next lane.
by John M. July 21, 2003
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Belief that whatever one does wrong is always an accident.
"I swear that I accidentally raped that girl. It was SO an accident!
by bojizzle May 21, 2004
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An individual whose age indicates maturity but whose approach to life suggests otherwise.
Whenever my neighbor waters his shrubs, he wags the garden hose between his legs and waves to traffic. Total accidental adult.

I try not to laugh when children call me “Mr.” They have no idea I’m an accidental adult.
by Peeper Winkman April 27, 2010
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When you're using Facebook messenger and you accidentally hit the thumb on the right side of the screen. It sends it right away, so there's no going back. It's an oversized blue thumb that gets inserted into your thread of texts. Often happens when you're having conversations that would be totally inappropriate to give a thumbs up.
Two people messaging on FB:

Johnny: "I just got back from the vet. My dogs eye was bleeding from the inside."
Daphs: "(thumbs up)"
Daphs: "Shit, that was an accidental thumb. I'm sorry to hear about your dog."

thumbs up facebook inappropriate whoops oversized texting messaging FB
by InTheKitchenCookingActualPies February 18, 2016
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when you are having sex with a girl doggy style and you accidently put your dick in her ass and she goes eh oh eh oh...like a dolphin.
So I was having sex with 2-Day the first time and I gave her an accidental dolphin, but she still wanted more the next day anyway.
by pdxrhino April 12, 2006
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Unlike a Troll, who deliberately intends to cause maximum disruption and argument, An Accidental Troll, is a normal user who speaks their mind a little TOO much through forums, and accidentally gives off the impression that they are a Troll, when clearly, they have little/no time and have a lot to say about the topics that are being posted.
BobMoney63: Hey, that guy is Trolling, ban his ass!

Admin: Nah, I've read through his posts, he's an Accidental Troll. He just has a lot of time on his hands, and has a lot to say about the topics that are being posted.

BobMoney63: Like there's a difference.

Admin: I'll ban you if you aint careful!
by WheelchairConfinedTurd January 26, 2010
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