Mistress Zephy was pissed at the way her husband behaved and she had to dominate and humiliate him. So she used her chastity humiliation fetish to punish him. She was not a pro at it but she had to try it out and that is how she came across chastity humiliation and she liked it so much that she had to use it to punish her man. He was shocked at how cruel she could be when pissed.