Former Sacramento King Mike Bibby was in Arizona when he decided to join in on a game of “21.”

According to the Sacramento Bee, Bibby was with his son, Michael, when he joined two guys playing, calling himself “Chris.”

The younger Bibby took a video and posted it onto Twitter, while the two other players didn’t realize his real identity until after the fact.

One of them, Andrew Zehnder, said “Right away I thought to myself: This guy looks really familiar. And I just couldn’t put two and two together. Neither of us are from Arizona, so he’s not like a quote-unquote local star I grew up idolizing. But I definitely know of him.”

Before his time with the Kings, Bibby played at the University of Arizona.

See below for the video.