<P> As a practical joke the trick is an example of anti-humor or surreal comedy . Of possible outcomes, false understanding is the most common . The scenario resulting from false understanding is a demonstration of groupthink and peer pressure--the need to conform to one's peers - despite the fact that the entire joke has no hidden meaning, nothing to "get" and no punchline . </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> The joke teller says something like "The elephant and the hippopotamus were taking a bath . And the elephant said to the hippo,' Please pass the soap .' The hippo replied,' No soap, radio ."' </P>

The phrase used more than any other soap in america is an example of