I have a little guy in my room who burps a lot. I don't know if it's a medical thing or what, but he always says "excuse me" and never really thinks it's funny so I don't say much about it.
However, the truth came out today. We'll call him "O" in this conversation:
O: "Mrs. Overman, you know that my brother will probably be in your class next year."
Me: "Yep, that's what your mom told me. That will be fun!"
O: "Yeah, but you should know he doesn't EVER use his manners. I use my eating manners ALWAYS at school. But I don't use my burping manners."
Me: "I know."