Another one I just remembered-- Does anyone else remember the episode of The Jetsons where the guy robs a bank and uses "baby gas" on the guards to escape? The one guard screams "OH no! Baby gas!" and then they're both helplessly acting like toddlers. Nothing major, a very quick scene, no diapers or anything, but boy did I want to get my hands on some of that baby gas! It was something I loved to think about-- the victim knows they're going to be reduced to acting like a helpless baby, but they're powerless to stop it. Are they dimly aware somewhere inside that they're acting in such an embarrassing way, or is their adult side totally submerged until (if?) it wears off and they regain their senses and are forced to live with the shame of acting like a baby in front of everyone!
I remember watching the rest of the episode very intently, hoping the robber and his hot girlfriend (or maybe even Jane and Judy ??) would get a snootful of the gas and wind-up adult babies at some point. Sadly, IIRC the baby gas was only used the one time.