I've heard of people taking baths with their snakes. Especially aquatic types (Anacondas) but not shower.
I've thought about it though, especially one time when I went to clean his cage and PPHHHHEEEWWWWWW. . .man what a stink. I thought I would choke! The largest turd I had ever seen from a snake and he decided he'd smear it against himself.
On a different note, I have taken showers with my dogs. Yorkies, they may seem small and weak but once you try to get them wet all hell breaks loose and they gain the strength of 10 men! So I grab our yorkie and slam the door shut (it kills her will to fight!) and proceed with the cleaning avoiding her claws/nails.