Testis twists

Twisted garden hose with a loose clamp

Imagine a garden hose (the spermatic cord) that normally is clamped firmly to a wall (the tunica vaginalis anchors it to the scrotal wall) so it cannot move or twist. In bell-clapper deformity, the clamp is installed too high on the hose instead of around the base, so the hose hangs loose and free. When the hose twists on itself (torsion), it kinks and pinches shut—water (blood) cannot flow down to water the garden (the testicle). Within hours, the plants (testicular cells) start to wilt and die from thirst (ischemia). The gardener feels the hose is hot and twisted, notices the garden is drooping, and must untwist it quickly before the damage becomes permanent. If the gardener waits too long (past 6 hours), the plants are dead and cannot recover no matter how much water flows again.