Vietnamese Convertible Joke

This ethnic fellow Vietnamese buys a convertible one day from a local car dealer. Later the same night, the car dealer receives a phone call.

"Excuse me, but do you happen to have an extra set of keys for my new car? I seem to have locked mine in."

"Yeah, sure. Where are you?"

"Corner of Main and King."

"Okay. I'll be over in about half an hour."

"No, no! You have to come over right now!"

"Why?"

"'Cause I left the roof down and it's starting to rain!!"