I just took a look at _This Book Sucks_ and iside of it is a family tree that definitely links beavis and butthead as half brothers. They both have different mothers, but are the fruit of the loins of some mystery man. Again, according to the book, there are three possibilities:
- Some unknown character
- The guy selling tickets at the sideshow (is this Dave???)
- Their teacher who is an ex marine. (This would be most scary!)
steve