Although the 2010 NBA Finals are already on Game 6 with the Boston Celtics up 3-2, that's not stopping Snoop Dogg from putting money on the Los Angeles Lakers.

The rapper recently issued a public challenge to Celtics fans to put up or shut, reports TheBoomBox.com.

If you follow Big Snoop on Twitter (@SnoopDogg), you may have noticed that he and former New Kids On The Block singer Donnie Wahlberg have been going back and forth about the series for the past week.

Now, the rapper is taking his own advice, and in a recent video, he challenged Wahlberg to a friendly wager of $20,000 on the outcome, of which would be donated to the charity of the winner's choice.

Of course, Snoop picks the Lakers.

"What it do, Big Snoop Dogg, Lakers fan #1. Wahlberg what it do? Y'all want that bet? Let's get it crackin'," Snoop said in the clip. "20 Gs to your favorite charity, Lakers beat the Celtics, that's what it do!"

In response, Wahlberg saw Snoop's challenge and raised him one Radio City Music Hall humiliation, daring him to settle the bet onstage at Radio City during NKOTB's performance there, later this week.

"I'll pay for the flight, rooms and expense. The loser steps on stage in the other [team's] jersey to hand over the check!" wrote Wahlberg via his Twitter (@DonnieWahlberg).

Game 6 of the NBA Finals takes place on Tuesday (June 15) at 9 p.m. at the Staples Center in Los Angeles.