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... I'm so glad that you called...”
“Really? That's wonderful...”
“Well, I'm happy to hear you're having such a great time...”
“Oh, that sounds terrific... Love you too.”
“OK. Bye-bye."
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."