"So why does your husband want you to cuckold him?" I asked her when he went to the men's room. "Small dick?"
"No, his penis is fine," she replied. "He's average, I suppose. He just wants me to try a really big one."
"And how about you? Do you want to try a 'really big one'?"
She looked at me thoughtfully and raised an eyebrow. "Doesn't every girl?" she smiled.