TIL the phrase "drinking the Kool-Aid", although associated with the Jonestown murder-suicides, actually originated in the Tom Wolfe book "The Electric Kool-Aid Acid Test" about Ken Kesey and the "Merry Pranksters". Jonestown actually used Flavor Aid.

[u/Melenduwir]

https://en.wikipedia.org/wiki/Drinking_the_Kool-Aid