I've got bad news for all you B.J. Penn fans.

It looks like your Hawaiian hero won't be coming out of his self-imposed retirement to fight fellow welterweight veteran Josh Koscheck, despite getting called out by "Kos" earlier in the day on Twitter. In fact, he may not be coming back at all.

Live by the tweet, die by the tweet.

@joshkoscheck I know it costs a lot of money to live that lavish lifestyle, big house, fast cars & you need big fights but sorry I’m not coming back anytime soon!

And there you have it.

Ultimate Fighting Championship (UFC) President Dana White, who insists "The Prodigy" will return, has been throwing everything but the kitchen sink at him in hopes of luring the former two-division champion back into a future mixed martial arts (MMA) fight.

That includes a Strikeforce title contest against Gilbert Melendez, which Penn felt was a "downgrade."

Penn came up short as the main event headliner for UFC 137 back on Oct. 29, 2011, at the Mandalay Bay Events Center in Las Vegas, Nevada. The unanimous decision win for Nick Diaz, which left Penn battered and bruised, sent him straight into an Interim title bout against Carlos Condit at UFC 143.

And sent "The Prodigy" straight into retirement.

The Hawaiian said he'll be back "if he ever feels it again," which means Koscheck is not a big enough fish in the 170-pound pond to get the job done.

Or was he, perhaps, a little too big?

Discuss.