PLEASE NOTE: We've made the pussy and ass openings deeper than previous models with thicker walls inside separating the rubber and the foam core. The hole on the backside of the masturbator is for air-release only. This hole does not connect to the pussy or ass and is not a drainage hole. It is designed to let air escape when fucking either the pussy or ass. If you submerge the masturbator completely in water, you will cause damage to the piece because water will get inside and wet the foam core. if the foam core gets wet, the core will shrivel up and get much smaller. You should only clean the masturbator by flushing water in and out through the pussy and ass. The two holes connect, so by flushing water through either hole will cleanse it properly. Do not rinse water through the backside opening and do not submerge the masturbator completely in water.