I can distinctly remember being in high school and seeing my band director's trumpet mouthpiece. I was rather impressed at the time, and I must say I am equally impressed today. The inner rim of the mouthpiece was starting to wear down almost all the way through the plating. Today as I pulled apart my gravity bong, I realized that the mouth piece that I am using is starting to wear in a very similar way. This leads me to conclude that my band director must have been using his mouthpiece as a smoking device.