Massage Treat in Locking Panties and Chastity

Send him for a nice full body massage with locking panties and his chastity device on. 

Make sure the woman giving the massage is a very attractive and young, and make sure she knows that you are sending him there for the massage as a special treat! 

 If you know her, ask her to tease him a bit of how feminine he looks and how much she admires you for having control of him like this!