On this week's episode of Keeping Up with the Kardashians, fans are made to understand why Scott Disick checked into a rehabilitation facility a few months after its taping.

While his girlfriend Kourtney Kardashian was 37 weeks pregnant with the couple's third child, Disick went with Kris Jenner to her 59^th birthday party at 1 OAK in Las Vegas.

Before the group left for the event, Jenner admitted to having some concerns about Disick.

She stated that he always gets into trouble and she was afraid that he would fall off the wagon. "You're going to have three little children at home very soon, under the age of 5," she told him, "Mason adores you. He worships the ground you walk on."

In response to her concerns, Disick became uncomfortable and shrugged them off, telling Jenner "I understand!...I get it."

For Disick, the trip was supposed to be strictly business because he booked Jenner for the event, but this did not end up being the case. Before the pair even got to dinner, Jenner received text messages from people saying that Disick was already out having drinks.

Khloe was not present in Las Vegas, but received phone calls from Disick and described his behavior as "belligerently drunk."

Viewers watched on as he displayed bizarre behavior, shouting "Don't panic!," making strange noises, and quoting movies very loudly.

By the time they reached the club, Jenner lost her patience with Disick, when he sprayed champagne everywhere and hit her on the head by accident.

Disick has stated that he will be returning to rehab after staying there for only a week.