there's no blasphemy. why? they want men, women and children to come there, they want a bigger audience. ♪ >> vaudevillian did something on stage that was objectionable, send a blue envelope backstage with the material they wanted excised from their act. that became the whole idea of the phrase blue material. >> say good night. >> good night. >> vaudeville comedy was accessible to all but concurrently another style of comedy that was a little bit different. burlesque houses like going to strip club. guys with trench coats to watch girls. different styles of comedy, different people performing within them. >> i see you lying there, my anger is aroused. i pull out my dirk. >> now we're getting to the point.