A childhood belief about weeing and pooing

I used to believe that if you made a peeing or pooing noise (such as the pee hitting the water in the toilet or your turd splashing) in a public restroom that people would think you were rude and disgusting when you walked out of the stall.
For years i sat in an awkward fashion at school, trying to angle my pee to make sure no one heard it hitting the water!