Her Fearful Symmetry

Mistress Sidonia's slave is tied to the bondage chair, cock and balls exposed on the CBT board. She proceeds to tie them up tight and use sharp pegs to sensitise the head and then zaps it with the prod, in readiness for her special electric cock cage. This squeezes down hard and allows the Erostek to pass it's current directly into his meat, making him moan and squirm. When sufficient punishment is taken he is rewarded by his Mistresses warm, soothing hand rubbing away the pain.