If you Google the definition of disinhibition, you'll find that it's generally assumed to occur as the result of alcohol or drug consumption, or maybe even brain damage.
For me, I find that there's something about paying someone to see me naked that I find utterly disinhibiting. In general I'm super shy and self-conscious, but the moment I have to shell out for a service that necessitates my being nude, all bets are off. Among other items.
I'm not a "naturist". I'm not an exhibitionist. In fact, just the thought of wearing a swim suit makes me vomit on my slippers a little (whoops, there I go again). But dammit if I'm paying someone to see me naked, I am going to get my money's worth.
And really, it works for me: for instance, my massage therapist couldn't do her excellent, bone-crushing work if I wasn't totally buck. Neither could the endless stream of aestheticians it seems I encounter in my pursuit of that mythical day when "it doesn't grow back as much". (*cough, cough - bullshit*) And, as taxpayers, I'm sure you'll appreciate that I not only strive to get the most out of my money, but I also work hard to get the most out of yours - as my G.P., gyno, dermatologist and dentist will (happily?) attest to.
Man, I shoulda been in politics.
So ladies, if you're feeling a little shy about leaving the lights on - y'know, maybe you're a smidge saggier or baggier than you used to be, I know how it goes - just slip the old man a fiver before hitting the sack tonight. (Er, maybe a ten spot if you're more than a smidge.) He might feel a wee bit whorish at first, but men get over that sort of thing in short order and trust me: if you're working the Disinhibition Zone without even being hammered or brain damaged, everyone wins.