When NBA legends Shaquille O'Neal and Charles Barkley make a bet, you know it's gonna be good.

On Sunday, the two frenemies made a hilarious wager on NBA on TNT if the Miami Heat and the Brooklyn Nets face off in the NBA Playoffs. The Big Diesel, who helped the Heat win a championship in 2006, said if the Heat take out the Nets, he would babysit Barkley's grandson for half an hour.

Always a quick-witted guy, Chuck said he would have to make sure his grandson is in a “crappy mood.”

One could argue that Shaq didn't exactly make a sound bet. Because why would he like to babysit someone else's grandson? But then again, we all know that the four-time NBA champion is a notorious prankster. Even a little kid isn't safe! Or hey, maybe he just adores Barkley's grandson so much.

Barkley was clear that he's putting his money on the Nets. He even mentioned that the Nets could beat the Milwaukee Bucks. While it's always dangerous to go up against Kevin Durant and Kyrie Irving when the stakes are high, the Heat have proven all season that as a unit, they're pretty tough.

Before the season, not many NBA pundits, perhaps even Shaq himself, picked the Heat to be the top seed in the Eastern Conference, but here they are. For sure, they won't be babysitting any opponent.