I love this pretty much daily ritual in our house...
adult: ‘Thomas, how about a bath?”
child: ‘No I don’t want a bath or a shower, I had one yesterday!’
adult: “Got to have a wash darling... (on the weekends add – whenever you want is okay but you have to have one before we go out)”
child: “Alright, I will have one now but I am not staying in there, I am just getting in and out”
adult: “Okay just give yourself wash and then you can get out”
....40 mins later ... Still singing, playing laughing in the bath after using up all of the hot water.