With how much I smoke, my ashtray is absolutely filthy. Instead of cleaning it out myself, I'm going to make you do it. There's a little catch, I don't want you just dumping it in the trash and calling it clean. I want you to clean it out with your mouth. Licking every last cigarette filter clean before throwing it away. Finally once I'm done smoking and have added even more ash to the pile, I want you to lick it clean.