"Chinese Goer" joke

A Chinese man arranges for a hooker to come to his room for the
evening. Once in the room they undress, climb into bed, and go at
it.

When finished, the Chinese man jumps up, runs over to the window,
takes deep breath, dives under the bed, climbs out the other side,
jumps back into bed with the hooker and commences to repeat the
performance.

The hooker is impressed with the gusto of the second encounter. When
finished, the Chinese man jumps up, runs over to the window, takes a
deep breath, dives under the bed, climbs out the other side, jumps
back into bed with the hooker and starts again.

The hooker is amazed as this sequence is repeated four times. During
the fifth encore, she decides to try it herself.

So when they are done she jumps up, goes to the window and takes a
deep breath of fresh air, dives under the bed... and finds four
Chinese men.