The amount of money required to buy a spot in a poker tournament. It's also generally your starting amount of money in the tournament.
The buy-in for the annual World Series of Poker is $10,000.
by PsyMar June 27, 2004
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He went to buy sneakers
by Rory October 6, 2002
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The state of mind where one is mentaly retarted due to the use of illegal substances.
I want to get buied this weekend.
by Wolfpack69 October 28, 2008
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"buy" is the dance you do while you download music off the internet.(usually in an illegal fashion.)
Btw, I'm doing the "Buy" while I download music XD
by Michigan Man March 12, 2009
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Operating a watercraft (Boat) under the influence of drugs or alcohol.
When the DNR officer boarded my vessel I blew a .12 so he gave me a BUI.
by Joe Ernster esq. August 5, 2007
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The most boring thing anyone could ever possibly conceive of.
"Hey, check out my new Brita water filter. Go ahead have some water - it tastes so good."
"You're so Bui."

"Hey, you wanna go out to eat?"
"No, I'm gonna stay here and study for my exam?"
"When's your exam?"
"In 3 weeks."
"You're so Bui."
by Brett Hendar March 7, 2009
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A nasty scam we used to pull on new employees when they got thier first full paycheck
Dude, it's payday! Come on down to the bar, it's buy-in!

I'll be there....What's buy-in?

You're buying the first round. See you there.
by KillAllHumans September 16, 2004
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