The Pecker Exerciser
From the Pecker Exerciser site:
The Pecker Exerciser is a much-needed gift for the bachelor. You can give it to him if you think he needs to "bone up" before his honeymoon or if you think that he may stop getting as much exercise after marriage. Purchase the Pecker Exerciser along with a sweatband and a bottle of water, and you're ready to go.
You mean there are dumbbells made specifically for my wang? All this time I've just been using rope and a bowling ball.