Place it as the punchline after a shot of someone entering unlabelled, then follow it with a confused huh for the reaction, and finish with a surprised wow if the group laughs.
Über diesen Sound
This is a short voice clip built around the single line 'He's not wearing a nametag,' delivered in about two and a half seconds as a plain spoken observation. It lands as dry and faintly awkward, the humour coming from stating something obvious as if it were a serious problem. The bluntness makes it feel like a quiet call-out rather than a shout.