This past weekend, I watched a documentary about the Jonestown Massacre. That is the origin of the term "drinking the Kool-aid."
Having seen that, I will never, ever use that term again.
"Drinking the Kool-Aid" refers to the 1978 Jonestown Massacre; the phrase suggests that one has mindlessly adopted the dogma of a group or leader without fully understanding the ramifications or implications: at Jonestown, Jim Jones' followers followed him to the end: after visiting Congressman Leo Ryan was shot at the airstrip, all the Peoples Temple members drank from a metal vat containing a mixture of "Kool Aid" (actually Flavor Aid), Cyanide, and prescription drugs Valium, Phenergan, and chloral hydrate."
Edited 6/26/12 by Sofie230