Taking a break from diaper duty, Disick and the couple's adorable 2-year-old son hit the beach Saturday for a boy's day out, playing in the ocean and along the shore in Malibu.
And Mason, who opted for a diaper instead of swim trunks, looked like he was having a blast, laughing and smiling while running on the sand.
"Had a great day in Malibu, now the lord is off to sleep." Disick tweeted Saturday following the father-son bonding day.
Kardashian and Disick welcomed their second child, daughter Penelope Scotland, July 8.
Keeping Up With the Kardashians airs Sundays at 9 p.m. on E!