"This is my favorite scene," I told him when we were watching the shot of her coming out of the ocean. "I got so hard shooting this that I couldn't wait to get home and jack off."

"Even though she's your sister," Mark asked, his eyes twinkling with obvious delight.

"I may not fuck her but it doesn't mean I don't find her incredibly sexy," I answered, pausing the video as Maryanne stood dripping wet on the beach. "Look at the way the water beads are dripping from her tits and her pubic hair," I said innocently, watching his elation build.

"Did Maryanne know you were coming back and jacking...