My students loved this last year. We couldn't stop laughing. I made it extra credit to encourage them to volunteer to speak on a topic. I gave 2-10 points depending on their clarity, creativity, and ability to speak fluently for 1 minute. The students should not see the topics before class. It goes much more smoothly if you cut the topics in strips and have them choose 1 with the print side down. Also read the topic to the class before the speaker begins.