A woman meets with her lover, who also happens to be her husband's best friend. They make love for hours.
Afterwards, as they lie in bed, the phone suddenly rings. Since it's the woman's house, she picks up the receiver.
The best friend listens, only hearing her side of the conversation: "Hello? Oh, hi...
She hangs up the telephone and her lover asks, "Who was THAT?"
"Oh," she replies, "That was just my husband telling me about the wonderful time he's having on his fishing trip with you."