Ever wanted to give your partner a double-decker without a 3rd person intruding?

Insert your dick in it like you would a cock ring, which prevents the blood from flowing out of your penis, which helps give you a more powerful erections. Then, you can lay on top of your partner and rub your dicks togther, while using the double dekcer to penetrate their arse too. Your boyfriend will feel just like they're in the middle of a sandwich.