He probably took a cigarette break to relieve the tension after a long night (as most smoking law students can relate to). But I think this particular yosi break only brought him more stress.
He took the elevator to go down the building, took his cig break and once again took the elevator to go up. Just before reaching his floor, the elevator got jammed.
No one knew that he was stuck in the elevator until after 41 hours.
Here's a video clip showing how he whiled away his time in the elevator:
Click here for the complete story of the longest yosi break ever.