A woman is in bed with her lover who also happens to be her husband's best friend. They "entertain themselves" for hours, and afterwards, while they're just laying there, the phone rings. Since it's her house, she picks up the receiver.

Her lover watches her and listens intently, only hearing her side of the conversation.

Speaking in a cheery voice, she says, "Hello? Oh, hi! I'm so glad that you called. Really? That's wonderful. I am so happy for you. That sounds terrific! Great! Thanks. Okay. Bye bye."

She hangs up the telephone and her lover asks, "Who was that?"

"Oh," she replies, "that was my husband. He was telling me all about the wonderful time he's having on his fishing trip with you."