1950 Jessica Saran seeks to create a clear plastic wrap designed to make pee pee splash on the potty pot, Saran's toilet wrap was later found to be good for the preservation of food as well.
It's related to anal retentive fixation, which is supposedly the result of unresolved conflicts between you and your caregivers during potty training But like so many things Freud thought it's kind of bogus.
Sheldon, you don't give your mother enough credit. She's warm, she's loving, she doesn't glue electrodes to your head to measure your brain waves while potty training.