Twist&Brush, A Kind of Reverse, Toothpaste-Filled Fountain Pen for Teeth. Imagine a beautiful old steel fountain pen, with its twist-to-suck pump that slurps in ink.

Twist&Brush complicates an easy chore\nImagine a beautiful old steel fountain pen, with its twist-to-suck pump that slurps in ink. Now imagine that instead of twisting the reservoir to fill the ...