My wife’s sister visited us yesterday in her brand-new Porsche.
Astonished, my wife asked, “How could you afford this?!”
“You know, a blow job every now and again makes my husband very generous,” she replied.
Surprised, my wife turned to me and winked. “I think I’ll start doing that.”
“Me too,” I replied, turning to my sister-in-law. “What’s your husband’s number?”
Explanation: Instead of being excited his wife will do this for him, he asks for his brother-in-law’s phone number—implying he wants to perform oral sex on the other man to get money/gifts too!