laager mentality
A mindset where the group is so broken, they let anyone do whatever they want, even if it's gross or insane, as long as they don't die or kill someone.
He peed on the group's tent, and no one said a word. 'He's one of us,' they said.
She got knocked out by a guy, and the others just said, 'It's part of the family.'
The guy tried to bite a cop, and no one stopped him. 'He's just being crazy.'