Someone who is said to "Drink the Koolaid" is a person who believes management without question. They support the airline party line even to their own detriment. Justin is unaware of this. He says the origin of the word is unknown but somehow it stuck. Uh, maybe he did not want to do any research.
The genesis of "Drinking the Koolaid" is the Jonestown massacre of 1978. Read about it here:
http://en.wikipedia.org/wiki/Jonestown
Jim Jone's followers drank the Koolaid, even though all around them people were dieing a painful death, just because he said so.
Do your homework Justin.