I don't, not my cup of tea, and it wastes too much water. I usually brush my teeth before I get in the shower though, in case I feel the need to do this
Whats so bad about brushing your teeth in the shower? Its fuckin awesome i keep my tooth paste n brush in the shower haha. If i dont have them in their ill be to lazy later to do it. because i hate eating or drinking after i brushed shits nasty. Ever had orange juice after brushing your teeth? Tastes like sour bong water hah