Ok, I can start this thread off with a bang.
I was a judge's assistant for many years. Every morning when proceedings would commence, we'd make a grand entrance into the courtroom while the bailiff did his "All rise!" routine. This took a few seconds, so while I was standing, I would take the time to shuffle through my paperwork and make sure I was ready to start. Then the bailiff would finish up his opening and say, "Please be seated and come to order," and the judge would start calling cases.
On this morning, I went to be seated as usual. As I bent to sit, I felt my buttocks just... brush... the edge of the chair. There was no way to regain my balance as I crashed in a crumpled heap onto the floor, the edge of the chair slipping away.
Naturally this caused a commotion in the crowded courtroom. But to make matters worse, I turned my head in time to see my bailiff don a horrified expression, then rush over and start hauling at me under the arms in an attempt to pull me to my feet. I was laughing so hard I couldn't help myself in any way, and he was smaller than me -- which was a recipe for complete failure.
I finally waved him off and managed to haul myself up to my desk and chair. The judge's expression looked like he would have preferred I just sink through the floor, leaving no ripples behind.
It was embarrassing.