One of your friends is behaving badly, and they aren't going to listen to your common-sense advice today. They are in no mood for cold logic: they just want good times and zero responsibilities. And it might be time to just let them get their way and see for themselves where their attitude will lead them. You cannot be in charge of someone else's life: it puts you in a position you don't deserve to be in. It also gives the other person a reason to not take you seriously.