Scott Disick shared a cute snap of himself on a plane with his son, Mason, on Instagram on Tuesday. The 5-year-old is shown wearing an an all-black ensemble with a hood over his head while Scott flashes a small smirk. The father of three captioned the photo simply, "Boys trip #killingit." The snapshot comes during a pivotal time for Scott, who split from his longtime girlfriend [2], Kourtney Kardashian, in July. Since then, Scott has posted a photo with the words "Never Give Up" [3] on social media, complimented a naked photo of Kourtney [4], and checked into rehab for drug and alcohol addiction [5]. Most recently, Us Weekly reported that Scott checked out of rehab on Nov. 10 [6].