Horse Cock, of course!

Tom thought for a moment, chuckling and thinking about his wife having a monster in her pants. "I wish my wife's clitorus would grow out to a fully developed horse penis of at least 30 cm the next time we have sex. In addition, I wish she would be extremely turned on by it's presence and not scared or disgusted. For instance, when we go to the beach, she will wear a skimpy bottom that shows off what she has." He giggled and did everything he could to prepare for a night of sex. He lit some candles and got some nice wine, made dinner and just waited for her to come home.