sipping the kool-aid
Going along with a stupid idea simply because fellow peers are rather than one thinking for his or herself. The term originates from when Jim Jones of Guyana lured a thousand people of his satanic cult into drinking cyanide-poisoned Flavor-Aid in 1978.
Dumbass: You wanna go play chicken?
Wise person: Why would I wanna go do something so dangerously stupid?
Dumbass: Because it's fun and all the cool people are doing it.
Wise person: All the 'cool' people are idiots! Quit sipping the Kool-Aid before you get yourself killed.
Dumbass: Hmmmm.....No thanks! My social status depends on it. I'm out! Later loser!
Wise person: Why would I wanna go do something so dangerously stupid?
Dumbass: Because it's fun and all the cool people are doing it.
Wise person: All the 'cool' people are idiots! Quit sipping the Kool-Aid before you get yourself killed.
Dumbass: Hmmmm.....No thanks! My social status depends on it. I'm out! Later loser!