Dallas Mavericks forward DIRK NOWITZKI can't sing.  The sooner he accepts that fact, the better for all of us.

Ever since winning the NBA Title last Sunday night, Dirk and his teammates have been drunkenly singing "We Are the Champions" every chance they get.

But the other day, at the big celebratory parade in Dallas, Dirk actually got on a microphone and LED the festivities.  He did NOT do a very good job.

This one is from a bar in Dallas on Monday night.

(To be fair, Dirk Nowitzki is GERMAN... which means that one of his boyhood singing idols was DAVID HASSELHOFF.)

(This is true.  Dirk has spoken in the past about singing The Hoff's CLASSIC track "Looking for Freedom" to calm himself down at the free throw line... because it was a big hit in Germany when he was a kid.)

(So if he's not the best singer, well... role models.)