What is this "kool-aid" stuff about?

I don't know what is it: I only drink tea, coffee, and real juices.
If Bill O'Reilly talks about it, does it mean he is deeply submerged in "kool-aid"?

I'm sure your aware of the the origin of the "kool-aid" phrase, but for those who are not, it refers to people who are easily led and misled, gullible enough to drink the "kool-aid" with the poison. Jim Jones created Jonestown in Guyana for his cult which began in California (imagine that) in the 70's. he mixed up a bunch of deadly kool aid and convinced almost everyone of his followers to commit suicide by drinking the "kool aid". I haven't watched old Bill in quite sometime but I doubt he has anything to do with anyone's kool aid.

He is paid by the kool-aid lobby.
Jonestown. Jim Jones' followers stood by and let cyanide-laced cool-aide be poured down their throats; much the same way democrats swallow any crap spewed out by HillBill, Hussein Barack or Crazy Harry.
It's just a term both sides use for a 'true believer', like those morons in Jonestown that drank cyanide-laced koolaid.
I believe it has something to do with using drugs in the 70s.
yea.seriously what is kool-aid???
It's what the Liberals drink, it alters their mind, makes them do crazy stuff, making crazy decisions.

That's what Bill Oreilly is talking about.