Dick Van Dyke enjoyed a “supercalifragilisticexpialidocious” 90th birthday, complete with a Mary Poppins flash mob at The Grove in Los Angeles.

The actor took over the mall´s plaza on Saturday (with a few Bert-like chimney sweeps) to sing a few tunes from the beloved 1964 film, including “Step in Time,” “Chim Chim Cher-ee,” “Jolly Holiday,” “Supercalifragilisticexpialidocious” and “Let´s Go Fly a Kite.”

The crowd then sang “Happy Birthday” to the actor.

Van Dyke shared the video on Facebook on Sunday with a short, heartfelt note: “I am very grateful that at 90 years old, I can still go out and play.”