Does anyone remember the episode of rugrats where Tommy wouldn't stop taking off his cloths so Stu made a restraining device to keep him from taking off his cloths?
http://rugrats.wikia.com/wiki/Naked_Tommy
I was a kid (9 years old) at the time but I found the device fascinating and actually wanted to be locked in it with a diaper on.
I think this episode contributed to my fetish.