I don't sing in the shower. You wouldn't want me to if I did. There is nothing that can help you from my tone-deafness.
But, for the past two days, I've been dancing in the shower. There's been no hot water. It's so cold that it's not possible to stand under the water. I put one leg in, get it wet, wash it, and then rinse. Then I put the next leg in, wash, rinse, repeat. This goes on for each body part. It was when I was done, I realized that I've been dancing the hokey-pokey.