NOT KNOWN DETAILS ABOUT LAUGHING GAS

While in the Betty Boop cartoon "Ha! Ha! Ha!" opens with supposedly Max Fleischer's hand drawing Betty Boop over a sheet of paper. When Max leaves the studio, Koko comes out in the inkwell to the very last time, and begins eating the candy bar Max experienced still left over the desk. Presently he develops a toothache, so Betty draws a dentist area