Brainiac 4 didn't actually seem horribly incensed over what Punchy said. She was, after all, a sociopath and while anger came to her naturally, shame and embarrassment didn't. That said, she didn't suffer fools lightly.

"Kill the mouthy one first," Brainiac 4 said to her son calmly. "Painfully. But then, you're going to kill them all painfully. Be sure to record it, won't you?"