One and Done

The action of leaving the lobby in a Fighting Game like Street Fighter or Super Smash Bros after winning 1 time after losing consecutively against the same person. Hence the name- "One and Done"
*Player 1 beats Player 2 8 times in a row. Player 2 then wins game 9 and leaves the lobby instantly after the win.*

Player 1: "Lmao the One and Done"
by Yukari Takeba December 29, 2019
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one and done

A term used in sports to describe a team's performance in the playoffs when they win their first round game but lose in the second round.
The Seahawks may have beaten the Saints in the wild card round, but they're gonna be one and done when they lose to the Bears in the divisional round.
by flappergaster January 10, 2011
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one and done

Having only one child and not wanting anymore.
Mary: So when are you all going to have more kids?

Carol: Are you kidding? We are so one and done.
by cq29 February 22, 2010
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one and done

To become extremely intoxicated after only one alcoholic beverage.
Chris: Why is Meghan ALREADY acting so DRUNK????
Dan: Yeah. She's always "one and done."
Meghan: WOOOOOAHAHAHHDOAWOWOAOAH!!!!
by Daniel the Jew April 13, 2008
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one and done

A highly popular term, used by a kid named Steve, that translates to a QUICKIE.

1. A chance to fuck a random woman spontaneously, and immediately leave her (while she sleeps, perhaps?)

2. Faking your way through a relationship so that you can score in bed and LEAVE. Good night!
"One and done! GOODBYE. NEXT! Movin' along." -Steve (Not used in a real-life situation)
by Cranky May 04, 2006
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one-and-done

A single-dose vaccine shot -- unlike the two-dose vaccines from Pfizer-BioNTech, Moderna and Oxford-AstraZeneca.
Breaking news: “Experts on the one-and-done advantage offered by a COVID-19 vaccine
The ease of distribution offered by a single-dose shot and its ability to be stored in a regular fridge are among the new vaccine’s biggest strengths
by humblepiece April 27, 2021
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one and done

a long-term monogamous relationship between husband and wife, in which one man and one woman, never previously married, wed and stay wedded until the day they die, come hell, high water, or anything in between. Also, an extreme commitment between husband and wife. See LDS Temple Marriage for more information.
Tim: "Dani, I'm so glad we've decided to be "one and done," so that we can stay committed to each other for the rest of our lives.

Dani: "That's right, Tim. We will never get a divorce, so long as we both shall live. In fact, according to LDS doctrine, we will stay married even after we die, and become gods and goddesses!"
Tim: "One and done, you've saved our marriage!"
by daniellamarcella March 09, 2011
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