Nuke joke

A Japanese drops a hammer out the window of a seven story window when he goes back down stairs he see a kid crying he ask the kid why he is crying and the kid says a hammer came out of the sky and hit my dad now he has a concussion.

An amerian drops a nuke out the window when he got outside he saw a kid laughing. He asked why he was laughing the kid said grandma farted and the house blew up.