As requested by several readers, here is a photo of bitch-boys inescapable tube.
His little cock is inserted from the left. It is a tight fit! Only the penis head protrudes out of the right hand side. The permanantly glued shut ring through his frenum piercing passes through the keyhole shaped hole (which is under his clitty). A plastic padlock hasp passes through the hole at the front, through the ring, and is then locked shut. The tube is polycarbonate and the frenum ring is acrylic, so no metal parts which means he can pass through metal detectors. It was his choice whether to make one himself he was comfortable with or have me purchase a Lori tube and him have it locked on, no matter about comfort or piercing location. He chose to make one!