A fire chief had just gotten married and on his honeymoon he informed his new wife that their house was going to be run like a firehouse... he said that they would have sex on the bell system.
He went on to say that one bell meant take your clothes off... two bells meant get into bed... and three bells meant start fooling around.
The fire chief came home from work one day and decided to try out his system.... he hollered "One Bell" and she took off her clothes. He hollered "Two Bells" and she got into bed. He hollered "Three Bells" and they started fooling around like crazy.
A few minutes later, SHE yells "Four Bells."
"Four Bells?" the fire chief asks, "What is four bells?"