Say what?! Kourtney Kardashian surprised her longtime boyfriend Scott Disick when she revealed she was pregnant for the third time. In a sneak peek of Sunday's Keeping Up With the Kardashians, the pregnant reality star had the self-described Lord seriously shocked and speechless after breaking the news.

While packing for an upcoming trip, the mom to Mason, 4, and Penelope, 2, asked Disick, "Can you shut the door for a second?" The 35-year-old then nonchalantly told him "I just wanted to tell you that I am pregnant."

Disick's response? He couldn't even form a sentence!

Us Weekly exclusively confirmed Kardashian was expecting baby No. 3 this past June. Despite Disick's shocked reaction, a source told Us at the time, "it was planned," adding that "[Kourtney] wants to have a handful of kids."

Watch the clip above and tune into Keeping Up With the Kardashians on Sunday, August 31 at 9pm ET/PT.