Steph laughs and shrugs, a silent your house, your rules because even if he's joking, he's definitely allowed to forgo the warning and decide how he wants to handle any rowdiness. But warning any Bats is probably the safer bet.

"Oh, you can let me handle Cass, she won't hurt me even if she's pissed off about something else." They can all ignore the fact that Cass could subdue Steph without actually hurting her. That isn't the point.