NOT KNOWN FACTUAL STATEMENTS ABOUT LAUGHING GAS

From the Betty Boop cartoon "Ha! Ha! Ha!" opens with supposedly Max Fleischer's hand drawing Betty Boop on a sheet of paper. When Max leaves the studio, Koko arrives out in the inkwell for your final time, and starts eating the sweet bar Max experienced still left around the table. Almost immediately he develops a toothache, so Betty attracts a den