Sponge Donut

Supplies, large sponge. rubber band. lubricant.

Take a large sponge and soak it in warm to hot water. keep it in a bowl, cup anything to keep it warm. get erect (isn't hard to do, excuse the pun) wrap the warm sponge around your cock like a doughnut, place the rubber band around the sponge right below the cock head, masturbate and enjoy