The joke which seems that everyone not at Skywest take it as some insult or something. The insides joke has been that the bro was flying Skywest express and the CRJ side was mainline. People have taken it as SkyWest is "mainline" vs expressjet pilot.

Those that have been at Skywest have known about the inside playfull rivalry between bro vs CRJ that we even had videos to mock each other during training.