Whoops.

Back in my city transit driver days, I was nearing the end of the route, it was fairly late in the evening, and I had been holding one for a while. It reached the point that I had to release the pressure, so I took a quick glance in the mirrors, didn't see anyone else on the bus, so I rolled up on the left cheek and let it rip. Boy did I feel better, but about 30 seconds later the stop request bell rang! Oh jeez, up walks a good looking woman, about my age, she'd been sitting behind me where I couldn't see her in the mirror. She kinda looked at me, I said that I was sorry, and I didn't realize that she was still on the bus. She just smiled and said when ya gotta, ya gotta, don't worry about it. I still felt kinda bad, but it was really a big relief.