Is it rude to be told off for yawning by a ... German?
Been There, Done That.
How is someone "telling you off" when they haven't said a word? Haven't you ever yawned after seeing someone ELSE yawn??? Maybe he was yawning because you did, and he had more manners than you. How did you know he was German? You made this story UP didn't you???
No, what YOU did was rude.
You actually said that? Wow. So where WAS your mother if she wasn't there to bring you up?
Probably not but it could be seen as being rude not to cover face when opening mouth, yawn or not, in public. The guy probably went red in the face because he was REALLY ANNOYED.
kind of but what you said was rude too