Yep. I've "known" one adult baby--online only, in a forum unrelated to anything sexual--and there was clearly something weird about her from the beginning. Of course she was stupid; of course she was fat. She didn't like it one bit when she mentioned getting weight loss surgery and then said she "didn't eat much," and I told her that if she truly didn't eat much weight-loss surgery wasn't going to help her. She started telling me not to reply to any of "her" threads anymore. So it was no real surprise that someone that, well, babyish would also be an adult baby. Her equally fat, equally creepy husband maintained a webpage for them and their "baby" selves, and waxed rhapsodic about the pleasureable feeling of a full diaper. They truly are just a ball of every sick and gross fetish available, and I have always thought that if you get sexual pleasure out of changing a diaper you do not belong within fifty feet of any child.