A man hired a Korean prostitute, while on a business trip. He was drunk and she was ugly, so he turned off the lights and went to town.
Suddenly she cried out "WONG HO!"
He was taken aback, but continued to pump away, and she would keep saying it over and over again, like a chant.
"wong ho! wong ho! wong ho!" and soon he joined in and said it himself.
When they were done, he said "What does that mean, wong ho?"
"You put dickee in wong ho, you stupid asshole!"