Dallas Mavericks legend and future Hall-of-Famer Dirk Nowitzki is having the time of his life in the offseason. Recently, he served shot glasses on stage during Justin Timberlake's concert in Dallas.

As posted by the Mavericks via their Twitter account, below is the video of the German serving up shot glasses on stage:

As observed, the two shared jokes on stage. Timberlake even shared a story when Nowitzki came to his concert years ago. In fact, the two teased each other a little bit:

“This guy came to see me when I did my first show here, years and years ago, Timberlake told the crowd. “And after the show he was like, ‘Why you did not close with ‘Rock Your Body?” I said, ‘That's good advice, Dirk. Why you don't got no ring yet?' But then the rest is history.”

Dirk, who has played all of his 20 seasons in a Mavericks jersey, is set to lace up his shoes for his 21st. At 37 years old, he's still not sure if next season will be his last.

As per Dwain Price of Mavs.com, Nowitzki shared that he's been relatively healthy and is focused on rehabbing his body in the offseason. He has not decided on hanging up his jersey for good. He's taking it one day at a time:

“I think I guess at this age you kind of take it one year at a time,” Nowitzki said. “It sounds cliché, but that’s how it is — see how I come through (next year).