'Kourtney and Kim Take Miami' Clip: Scott, Bruce Clash at Dragon Boat Practice (VIDEO)
"[Bruce is] so overly competitive, it ruins all the fun for me," Disick says to the cameras as Jenner is heard yelling, "Man up! Let's go. This is really sad."
Very quickly, Disick decides he's had enough with Jenner's Olympic-style training and storms out of the practice session.
"Bruce is trying to take digs at me, trying to belittle me. This is the last thing I feel like doing," he says at the end of the clip.
Kourtney and Kim Take Miami airs Sunday nights at 9PM on E!.