What "doubt" is there to give benefit to? Have you done any investigation? Since both the mother says he's not the father and another man has come forward to claim paternity, exactly what is left for this "story"?

And you fall for the precise problem: "If" and "hypothetically." So "if, hypothetically, it were true that you engaged in sexual relations with a goat," then we are perfectly justified in pursuing this claim, right?

Indeed, it's good to have an open mind...but not so open that your brain falls out. Do you have any evidence to support the allegation other than claims by hacks such as Kaus that it would be one hell of a story "if" the rumors were "hypothetically" true?

Here's a thought: Hold up until you have some actual evidence. You know, do the work of investigative journalism. Hint: It cannot be done via Google. Instead, you have to step away from the computer and talk to people who are directly involved (no, your father's brother's nephew's cousin's former roommate isn't a source) and actually find out what is going on first.

Until then, there is no story.