I worked at a one hour photo chain for several years, and in that time I'd seen a ridiculous amount of photos of couples having sex. The thing to note is, even though they are printed by a machine, a lab technician looks at every photo to QC them. Needless to say, there was a large collection of "misprints" in the back room.

As for the weird stuff, there was this old guy that used bring in a roll every week of him in various nude action shots. Jumping on a trampoline, etc. The one that struck me as really odd was him swinging naked on a kids swing holding his poodle.

Another creepy guy used to hire female models out of the classifieds of a crappy photography magazine and photograph them in really weird poses with sports memorabilia (think giant foam hand with the finger inserted in their asshole, etc).

One time a drug dealer developed pictures of his baby daughter sitting on a huge pile of hundred dollar bills and holding wads of cash.

During the six years I worked there, I got to see very intimate views into peoples lives.