Mummified Slave Expecting a Handjob, Locked in a Chastity Cage Instead

I've blindfolded my slave and restrained him with bondage wrap to a bench so I can wank his cock or so he thinks, instead I proceed to take advantage of his position and cut a hole to access his cock so I can lock his cock in a steel Bon4M chastity cage and to his waste chain, give him a little tease and then leave him mummified on the bench while I go and have a long relaxing bath.