Last season, two NBA legends weren't on the court for the Lakers and Spurs.

Obviously everyone knows who we're talking about (Kobe Bryant, Tim Duncan) and with those two future Hall of Famers not playing, it made us cherish watching Dirk Nowitzki even more.

The 39-year-old is coming down the final years of his career (we imagine), but he's still balling out and breaking records.

Monday, 'Disco Dirk' turned 39 and the NBA wished him a Happy Birthday on Twitter.

Nowitzki, being the hilarious guy that he is, had the perfect response to the birthday wishes.

Dirk may be 39, but he still shoots the one-legged fadeaway like he's in his mid-20s.

Hopefully he can help the Mavs reach the postseason a couple more times before he calls it a career because when Dirk is in the playoffs, anything can happen.

(H/T: Dirk Nowitzki)