I think each person has met some misunderstandings in his life.
What was the most funniest case in your life? Could you share with me?
One time I pushed some guy flying into the swimming pool from behind. I thought it was my brother, it wasn't.
I once heard a native English speaker new to Russian language mix up in Russian "to wash" (мыть) with "to beat" (бить) in reference to his dog during a conversation with a Russian woman. He even declined dog correctly (собаку). She was horrified. He quickly corrected himself.