New Kids on the Block

Snoop, Donnie Wahlberg Place $20K Bet on NBA Finals Outcome

Though the NBA Finals currently rest at 3-2 in Boston's favor, legendary L.A. rapper Snoop Dogg has issued a public challenge to Boston Celtics fans -- put up or shut up.
The Doggfather has been going back and forth via Twitter with Boston Celtics fan and New Kids on the Block singer Donnie Wahlberg…