What is the worst/cringiest joke that 당신 have ever heard 또는 told?

Mine was when I was working as a Quality Assurance Tech for a 빵 company two years back. I was being taught about the proof boxes and freezers and all of that stuff, and when my trainer, Johnathan, was going over how the proofers affected the dough and what they did.

So it came to a part where the trainer was like, "See? The 빵 is rising."

And me, being typical nineteen 년 old me, was like "You know nothing, John Dough." Fuckin a' xD