I first started back in the mid-70s. Back then the wank mags like 'Playbirds' used to carry (along with the naked women pix) concocted stories which were, in reality, adverts for (mainly London based) massage parlours.
A few pages further on and there would be actual adverts for the establishments mentioned in the cod story. The adverts would usually have a gorgeous blonde and they would openly advertise topless massage.
I used to daydream about such places opening where l was.
Then, one day, having to get off the bus to work a few stops early due to some traffic problem, l passed what had been a small, Victorian office building, and pinned to the door was a handwritten sign announcing that a new "Swedish" massage centre was now open inside.
As the mag adverts were all for Swedish massages, l was round there as soon as l could get. Of course, she wasn't blonde, or Swedish, but a half-caste scouser - thankfully with a filthy mindset.
Never looked back - but even all those years ago l was canny enough to keep schtumm about my new found hobby.