Since the wife is eight months into her pregnancy, the husband has to
sleep on the floor to avoid any regrettable mistake, which might
happen pretty easily, for he has been desperate for quite a while now.
Just before lying down on the bed, she glances at him & sees the poor 
guy curls up on the floor, eyes stare widely into the empty air, filled 
with hopeless desire. Feeling sorry for her husband, she opens the top 
drawer of the cabinet, takes out a fifty dollar bill, and gives it to him:

Awww, my honey is so depressed. here, take this & go to the woman next
door, she will let you sleep with her tonight. And remember that this
happens only once.

ok!!?!! don't think about it again. The husband rolls his eyes in
disbelief, but afraid that she may change her mind, he grabs the money
and leaves quickly.

A few minutes later, he returns, hands the bill back to the wife &
says with much disappointment: She said this is not enough, she wants
sixty.
 
The wife replies, "That bitch! When she was pregnant I only charged
her husband $50!"