A figure of speech that means to buy into the ideas or beliefs that someone else is selling, be it a company or a church. It strongly suggests that the ideas are nonsense and possibly dangerous. The phrase is a reference to the Jonestown massacre in which the cult leader Jim Jones led his followers to commit mass-suicide by drinking a poisoned fruit drink similar to Kool-Aid.
"You've been at that company too long and they treat you like crap. It's time to stop drinking the kool-aid."

"He's been volunteering for that political campaign and it's all he talks about. Half of it is BS ... I wish he'd stop drinking the kool-aid."
by CatsAtTheKeyboard February 13, 2020
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A verb meaning the act or process of entering a room by throwing yourself through a door with force similar to the force used by the Kool Aid Man in Kool-Aid commercials. The Kool Aid Man typically busted through doors or walls and said "Ohh yeah", but when Kool-Aid-Manning in through a door you've the option of also saying "What the fuck are you kids drinking?"
Mystery Person #1: Dude, Nathan was in bed and his door was closed, so I kool-aid-manned it through and now his door is torn up. He's pretty pissed.
Mystery Person #2: Yeah, he's got $3,000. He can fix it.
by KoolAidMan December 12, 2006
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A fat loud white guy who acts black. He only acts black infront of his black friends
Dannys such a kool aid dude in front of Jamal.
by Kool Aid Dude September 26, 2015
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A gathering with the purpose of mass suicide, usually by members of a cult.

The phrase comes from the November 1978 mass suicide of the members of the Peoples Temple Agricultural Project, colloquially known as "Jonestown", in Guyana. Over 900 people died from ingesting Flavor Aid, a powdered drink mix similar to Kool-Aid, laced with cyanide and other chemicals. This is also the origin of the phrase "Drink the Kool-Aid".
"The Mayan calendar says the world is going to end. Let's have a Kool-Aid party!"

"Those jerks at the Westboro Baptist Church need to go have a Kool-Aid party."
by ToborTheMighty September 20, 2012
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a glass of juice who thinks it is ok to just bust into people's homes while they are minding their own business
the bitch just busted through my wall and yelled oh yeah!!!!!!!!!!!!!!!!!!!!!!
by stan February 16, 2005
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To completely buy into an idea or system, whether good or bad.
Coach Bellichick got his players to drink the kool-aid.
by Some Guy February 5, 2005
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