2 questions:

1. what is the one poetic device called that's an extended metaphor and can last for mostly all of the entire poem?
2. what is the conceit that the tv shows 'rugrats' and 'family guy' share with regards to biabies and speech?????
thanks!

These sites will help you with those questions. However you will have to have watched Rugrats and Family guy to answer the second one.

http://www.google.com/search?hl=en&ie=ISO-8859-1&q=+poetic+device+&btnG=Google+Search