He spies on his mother's friend in the shower... and ends up having sex with both of them.

This guy is having one of the best days of his life. He's not yet aware of what's about to happen. A friend of his mom's is staying for a few days, and he spies on her while she showers. She's got some serious curves. But the bastard ends up in a threesome with both of them... with his mom's friend and his stepmother too!