All the toothpaste you actually need
(Project 365 Day 137)
I love how in toothpaste commercials they always cover the entire head of the toothbrush in toothpaste. Then they double back for a second pass.
I think they do quite an effective job of subconsciously convincing everyone to use several times as much toothpaste as we really need, which of course means we end up buying more toothpaste. :P