Masturbating behind her back

From Create Your Own Story

You stare at the water running over her round ass and start jerking yourself off. You notice her long, soft legs, and then the sides of her large breasts as you peek to the side. Your cock is getting larger and stiffer.

Surprise her by:

• Blowing your load on her ass
• Sticking your penis up her ass
• Grabbing her waist and spinning her around to face you