What if you show off your busty masseuse masturbation!?

An Asian-style massage parlour made by female therapists. It's not a shady store at all. But there are male customers who want to somehow do something naughty at such a shop. During the treatment of a young, busty masseuse, the lower body of the male customer loses rationality and unexpectedly shows off her masturbation! What kind of action will the female masseuse respond to such a male customer?