I don't think I need to repeat what others have said, but this may drive the point home.
A few weeks ago I was at my local Massage Envy for my weekly tune up. While waiting, my therapist come running through the waiting area with her arms full of clothes. She went outside and proceeded to throw the clothes in different parts of the parking lot and his underwear ended up in a tree. The guy came running in with the sheet wrapped around him and was met by the manager who told him to leave the sheet and get out. Upon re-entry the therapist told all of us waiting to expect the same if we started getting frisky.
Things like that remind me that if I want a massage with extras to do my research here first.