Done the construction site, too, but I'm an architect, so y'know... access. Also top deck of a mall parking lot on Sunday afternoon, graveyard at night, stairwell of a swank condo building during a New Year's party... Had a threesome once in a private sex club with some rando watching me and my GF with our friend, but is that naughty? The place is FOR sex.
Where do people get the numbers - are they counting? Seriously; when I'm looking at this set I've got better things to do with my eyes than count. I think I'd get distracted and lose my place if I tried!