Mark Zuckerberg Is on Diaper Duty! Facebook CEO Shares Adorable Photo of Him With Baby Daughter Max

It's been less than two weeks since Mark Zuckerberg became a father, and he's already a pro at diaper duty!

The Facebook CEO posted an adorable pic of him with little baby Max that showed him grinning from ear-to-ear with his firstborn.

"One more down, thousands to go," the 31-year-old posted. Looks like the new dad has the right attitude!