A Chinaman in Paris picks up a girl and takes her to his room.
He opens the bedroom window and takes a deep breath. Then, they get into bed together and make love. After a while the Chinaman says, "Excuse me, I am a little tired."
He gets out of the bed, goes over to the window, takes a deep breath. Then he rolls under the bed and comes out the other side. He jumps into bed and starts to make love again.
After a while, he gets up saying, "Excuse me, I am a little tired."
Again, he goes over to the window, and takes a deep breath, then he rolls under the bed and gets out the other side. He jumps back into bed and starts making love once more.
When this has happened five times, the girl gets up saying, "Excuse me, I am a little tired, too." She goes over to the window, takes a deep breath of air, looks under the bed and finds four Chinamen there.