Earlier this week, Ultimate Fighting Championship (UFC) Welterweight Champion Georges St. Pierre said he still has unfinished business at 170 pounds, a division he plans to abandon after gaining weight to fight reigning middleweight champion Anderson Silva.

Maybe UFC President Dana White should have called B.J. Penn instead?

"The Prodigy," who moved up from lightweight to capture the welterweight crown from Matt Hughes way back in early 2004, explained to reporters on yesterday's UFC on FOX 5 media conference call (via Lethbridge Herald) that a St. Pierre vs. Silva "super fight" depends solely on "Rush."

But what would B.J. do?

"That fight, that's on Georges himself. But everybody on this phone call knows what B.J. Penn would do. You know what I would do if Dana called me to fight the champion (in the weight class) above."

Penn has a history of ignoring weight classes, even going as far as fighting former UFC Light Heavyweight Champion Lyoto Machida at K-1 "Hero's 1" back in March of 2005, losing a three round unanimous decision to "The Dragon" during his Octagon hiatus.

Now he's back at 170 pounds for what could be his last hurrah.

Standing in his way at next week's UFC on FOX 5 event is Rory MacDonald, who trains alongside St. Pierre at the TriStar gym in Montreal. Anyone think "Ares" will make him eat his words on fight night? Or fall to 0-3 against the sons of Zahabi?

And what's your take on his little jab at St. Pierre?