Your missing an option, what about only hot. I only brush my teeth and wash my hands with hot water. I mean, c'mon, you wash your dishes in hot water, why not your teeth?![]()
Well, I suppose you need water to rinse your toothbrush after you've used it!
And your mouth after you're done, surely?
Cold all the way. Unless I'm shaving or washing dishes.
I don't think the OP is a shaver, or at least not yet.