Although "happy ending" massages are a real thing that some massage places offer "under-the-table," most massage therapists keep it purely professional. They know that crossing a sexual line with client can result in them losing their job and/or license. The majority of massage clients know this as well. But there are still some clients who cross the line, making things very uncomfortable for the person who's just trying to make a living smoothing out muscle pain.
Many massage therapists have responded to question number one by explaining that no, they would never risk their jobs by engaging in a sexual activity with a client. But that doesn't mean creepy things don't happen when clients—illegally—try to cross that line.
1.) From kingnixon:
I do home visits (I'm male). Had a particular client 3 times. usually I have clients strip down to their underwear, the second session he got nude but i didn't think much of it as he seemed ok. At the end of the third session as I was massaging his neck while hes on his back he just started jerking off. I was kind of shocked in the moment and didn't know what to do. He reached for my hand as if to get me to finish him off and at that point i stood up and said I have to go. Was fairly awkward waiting for him to get dressed so i could pack my table and get my money and leave.
I've had a couple of incidents in my 5 years, female therapists would have it much worse. Sucks that massage is associated with the sensual/sexual because i really like helping people overcome aches and mobility issues but it's hard to advertise without getting calls from guys wanting their dick tugged.