I usually sit by myself at lunch but sometimes random people like to come up to me randomly.
Well, this one time, this relatively big crowd started forming because one of my friends came over and then one of his friends and so on and so forth.
Well, I forget the circumstances, but the lunch that day was corndogs, and I guess I started choking on a bit, so someone sitting near me goes like:
(some guy): "You sure you can swallow that right?"
(me): "What? No, I think I swallowed it just fine."
(some guy): "You sure did."
It took several days before I understood all what they were laughing at me for because someone had to explain it to me bluntly. I'm still disappointed in myself to this day.