Brad Paisley won't be making anymore bets with rappers anytime soon. He admits he learned a very expensive bet lesson when he made a bet with Ludacris.

Brad said in a video he posted to Facebook over the weekend, "Don't make bets with rappers ... they're very expensive!"

That's when Brad's fellow "Rising Star" judge, rapper Ludacris, pops up holding an expensive box of Cognac and says, "Man, you better not've poored Hennessy in this thing."

The low end starting price for the Remy Martin Cognac Louis XIII that Ludacris was holding up is around $3,000. On the higher end of the price range some bottles go for over $40,000.

Still no word from Brad on what the bet was all about between the two. Expensive lesson learned!