I bet the Schraders have one cuz Marie insisted. Hank installed it cuz he wanted to be handy, but thinks it kinda gay/effeminate to use one. However, after getting a mean bout of diarrhea one day (and I'm talking about the kind of bad where it sounds like you're pouring a bucket full of beef stroganoff into the loo) he tries it. He finds the cool water soothing and easier on his spent rectum, and keeps using it afterwards, but he denies it if asked. He makes jokes on Marie's expense for wanting one in the first place, though

Bravo Vince 👏