Anyone who watches "Keeping Up with the Kardashians" knows that the family loves to pull pranks, and that is exactly what Kourtney Kardashian, Scott Disick and Kendall Jenner did on April Fools Day. The oldest Kardashian sister took to her Snapchat Friday to pull a fast one on all of her followers when she "caught" her little sister Kendall in bed with the father of her three children, Scott Disick.

The Snapchat videos started with Kardashian asking the youngest member of the Kardashian/Jenner family, Kylie Jenner, in her foryer if she knew where Kendall was, but she said that she had not seen her. The 36-year-old mom of three then took the camera with her and looked in a ton of different rooms before she finally found Kendall in on of the bedrooms.

"Wait, who is she in here with?" Kardashian said when she opened the door, realizing that the 20-year-old model was not in the bed by herself.

She then realized that Disick was in the bed cuddling with her little sister. "What the..." Kardashian said before she chased her ex out of the bed and house.

"You're so sick, you're so inappropriate, like, what is wrong with you?" Kardashian is heard saying in one of the Snapchat videos.

Disick then busted through the gates of the home before he turned around and yelled "April Fools" to the camera.

This is not the first time that the former couple has pulled a prank together on the social media app. The two previously joked around with fans that they we're going to get back together after splitting in the summer of 2015.

"So, um, we wanted you guys to hear it first," Scott says to the camera. "We are getting back together."

Disick then tried to plant a kiss on Kardashian, who pulled away and yelled "No!" while she was laughing.

"By the way, everyone relax," Kardashian previously said to her fans regarding her relationship with Disick. "We have three kids together. We spend time together."

Check out the full Snapchat video of the "Keeping Up with the Kardashians" stars pulling the hilarious prank below: