Visibly taken aback, Viall laughs and says, "Uh, no more," while putting his hands up in a defensive position.
"That's the last one." Josephine wasn't done with her act, though.
"I can't believe I'm still with you," she said.
Playing along, Viall gave a side-eye and said: "I'll stop drinking. Like, one more day. And then I'll stop. It's Ron's bachelor party."
"I hope you have a really nice time," Josephine simpers, before spitting "Pr--k" and stalking away.
Explaining how she was able to pull off the slap heard 'round the set, Josephine said, "It's weird, because I don't feel like I'm in an angry place with him yet, to break up with him. And so to, like, find that inner rage is going to be a little bit tough."