To the fireman's dismay, the wife agrees. The next night after they have dinner he rings the bell once. The wife immediately strips. He rings the bell twice. The wife runs to the bedroom. He rings the bell three times. The wife jumps into bed with him & they start making love. Just when the fireman is about to reach the height of passion, the wife grabs the bell & rings it four times.
The fireman stops & asks, "What are you doing?
The wife responds, "That's four bells! Four bells mean I need more hose! You're nowhere near the fire!!"