She knows that my wife has me in a chastity cage with spikes

This is my wife's best friend. She's really hot, with a beautiful body. She also knows that my wife has me in a chastity cage with spikes to keep me from getting an erection. So while my wife goes out on her "date", she gets to "cuckold-sit" me!

Naturally, she wants to go to the pool, so she can show off her smoking hot body to me, all while watching my obvious discomfort. I knew I was going to lose when she said:

"Would you come over here and put suntan lotion all over me? I think that my soft, white skin might burn under this sun. You can start with my neck and work down..."

My wife goes out to cuckold me