I agree it's not gender. I can brush my teeth and use less than an 1/8 cup of water. My hubby on the other hand will use about 1 gallon...why? Because I can't get him to remember to turn off the water while he's brushing.
We just got back from a three day trip with both of us, our teenage daughter and the dog. We used 15 gallons...well 9 if you discount the 6 gallons for his teeth...
