Racially Insensitive Chinese Joke

This from my polish friend Kasia in Warsaw (adapted to English for your astonishment and complete waste of time)

Scene: A Young Man sits next to a Old Woman on the bus line 146 in Warsaw.
Conversations begins:
Old Woman - Excuse me. You are Chinese, right?
Young Man - No, I am not Chinese
Old Woman - Really? I thought you were Chinese.
Young Man - No, I am not! I am Polish
Old Woman - Well, then your father was Chinese, right?
Young Man - No! My father was Polish.
Old Woman - Aha! Then you mother was Chinese then!
Young Man - No! My mother was Polish too.
Old Woman - Really? I thought you were Chinese
Young Man (frustrated. wants to end this stupid conversation with this stupid old woman says) - Yeah! I am Chinese!
Old Woman - You are? That's strange because you don't look Chinese to me.

Bada Bing