How to have a quick shower?

I cannot take a quick shower, life is determined in there!

I'm missing a limb and I can't take a 4 min shower haha

Showers are for enjoyment not penance.
http://cartoonsbyardeet.com/ardeet/2013/05/showers-are-for-enjoyment-not-penance.html

It takes me 4 minutes just to stand there under the water and get the momentum up just to move and lather up.