A childhood belief about tv shows

Wow, this is probably a weird, obscure belief. When I was about 4 or 5 years old I saw an episode of "Mr. Roger's Neighborhood" where a little girl was getting a check-up at a doctor's office, and the little girl was in her underwear when the check-up took place. I believed it was "wrong" that someone would allow a child (or anyone for that matter) to be shown in his or her underwear on TV. I didn't realize back then that that's how people were supposed to be seen during a check-up at a doctor's office. Even when I found out that that's the way people were supposed to be seen during a check-up, I didn't know why this was because as a kid, the only things I remembered my doctor checking that was below my waist was my heart (and the occasional shot in the arm) and usually he'd just slip his stethoscope under my shirt instead of having me take it off (at least that's what I thought...)