Cherokee_Cruiser
Bronteroc
Or, that pilot has tattoos and is complying with uniform policy.
Meh. I throw hats in the same category. I don’t care if Delta makes you do it.

This trip I’m on now is the FIRST time I’m flying with a guy that has long sleeve shirts but is actually a pretty cool, chill, mellow guy. All the others before, oddballs/annoying/weird guys. A long sleeve is a giveaway.