Now hold on there. That's not what I said at all, and you don't have to explain the self-evident term "found-in" to me. By now we should all know that sex acts for money are not criminal in Canada, but pretty much having anything to do with a place where such legal acts customarily occur is.
I'm only in this debate because of the assertion that "A Body Slide, where you pay extra for it is considered a sexual act,…" under the terms of the bawdy house prohibitions, which I still question. I'm afraid I didn't find anything that specific in the general refernce you gave to Section 210 CCC, but I may well have missed it, so if there's a more specific citation, I'm interested.
While it's certainly true that w/o a clear, concise set of definitions, the cops can arrest and the Crown may even charge for just about any act they think of as naughtily sexual, it doesn't mean the action actually is what they say. That can only be determined by politicians who write the laws and by judges who have to figure out what they meant to define as criminal—or have to supply definitions the pols left out. That's why we call them trials, and not sure-things.
So, I thank you for warning me that a paid-for body slide might be considered an act of prostitution by a cop at some time. But when I was asking for your authority, I wanted the court decision or specific reference in the law which would justify his version. And if a judge can find that an unnegociated happy ending is spontaneous and not an act of prostitution, I'd think I'm justified in holding my belief that neither is a slithering of two naked bodies, at least until that authoritative decision comes along.
As to licensing vs criminal law which many seem to find murky. The Mississauga bylaw, as is common, expressly provides for license forfeiture if there is any criminal activity on the premises. So at least their Council believes a non-criminal body slide is possible, given that they allow such services to be communicated and performed. Were the matter as cut and dried as you originally asserted, they'd be licensing criminal acts, which as you say, they cannot do.
Of course what two consenting adults actually do in private may be quite different from what they are supposed to do under any law, municipal or criminal. So it's good advice: that it's all dangerous, and that it's not so much what you may do at the MP, but what everyone else is doing that matters.