David Beckham Crashes His Son Brooklyn's Instagram Video in the Funniest Way

David Beckham shows off his muscular arms in a tank top while out on Friday afternoon (April 17) in Brentwood, Calif.

The 39-year-old former soccer star grabbed some smoothies and acai bowls from one of his favorite spots.

PHOTOS: Check out the latest pics of David Beckham

Earlier that same day, David‘s son Brooklyn took to Instagram to celebrate hitting one million followers, but was interrupted by David who bragged about his higher number.

10+ pictures inside of David Beckham grabbing some healthy treats for himself and his family in Brentwood…