I never did answer the "stupid thing you said" in dementia thread. since i think we should just let that thread die, I answer it here as my random thing.
My freshman year at UCLA, in a semi lecture hall. It had about 100 people in it, so it's bigger than a normal class, but not as big as the regular lectures. It was a lit class, if I remember right. At the end of hour one, I felt like I had to go to the men's room, but I thought, I could hold it until the end of lecture. Middle of hour two, I just couldn't hold it any more. Now this was my first quarter, so I didn't really know what the protocol was. Remember back in high school, you needed to go, you raise your hand and asked permission. So I thought it'd only be polite to ask, instead of just sneaking out. I raised my hand, asked, and everyone, including the professor burst into laughter. So yeah, that was one of the dumbest things I've said.