This was another early Charlie Chaplin film that he also directed. Since it's for the Mack Sennett Keystone Studio, expect lots of punching, slapping, and throwing of bricks. In Laughing Gas, The Tramp is a dentist's assistant who sometimes acts like he's his boss. One of the ways he takes advantage of that is when he steals kisses from one of the lovely female patients by using one of those tweezers to pull her face toward his. And she seems to like it! That was one of the funniest scenes for me. There's also a funny fight/chase between him and Mack Swain that causes Swain to go guess where! So on that note, Laughing Gas is recommended and is available on a DVD collection called "American Slapstick".