Apparently it's called a "Kentucky shower" (glad Kentucky has something they can be proud of! lol j/k). The end of the vid is genius too!
I tried it last night and holy crap! I can't believe I've been taking regular showers my entire life. Even light beer tastes great in the shower! And the hot/cold thing going on is a truly unique feeling. Of course, cant' do this every day but I'm thinking of maybe doing it every Friday night to end the work week to celebrate.
Who else has done this? Am I the last to know about this glorious ritual?