The set up is that somebody is making one of these things and they were so delicate that any noise above a whisper could deflate them, ruining them. Then the punchline is when someone or something makes a loud noise and the souffle collapses as predicted.
It feels like such a relic these days. They don't do the gag anymore and I wonder what that said about pop culture at the time.
Has that joke come up again in recent years or am I that detached from TV?
What are some other jokes that seemingly vanished?
Not related to the prompt but thank you for reminding me that soufflé is a thing. My partner got on a soufflé kick a few years ago and nailed them and hasn't made any again since. I think I'll request one.