A middle-aged man returns home from a business trip a day early, concerned that his wife may be having an affair. He's riding in a taxi at about 2:00 in the morning back towards his house, when he explains his situation to the taxi driver.
It's after midnight. While en route home he asks the cabby if he would be a witness.
He explains to the cabbie that he suspects his wife is sleeping around on him, and offers the him $50 if he would be a witness to the affair, if he could catch her in bed with him. By the time they reach his house, the cabbie agrees.
They park a few doors down and, quietly, sneak into the front door and up the stairs. Then, with a burst of speed, the husband flicks on the bedroom lights and rips the blanket off the bed - and there his wife lays in bed with another man!
Out of his coat pocket, the visibly distraught husband pulls out a gun and puts it to the naked man's head. Just then, his wife yells "Don't do it! I lied when I told you I inherited all that money!..."
HE paid for the Mercedes I gave you.
HE paid for our new cabin in the mountains.
HE paid for your Atlanta Braves season tickets.
HE paid for our our lakehouse and boat.
HE paid for your country club membership, and and HE even pays the monthly dues!'
Shaking his head, unsure of whether to pull the trigger, he looks over at the taxi driver and asks "What should I do?"
The taxi driver replies, "I'd cover him with that blanket before he catches a cold."