Marines have the highest standards of professionalism at all times. Whether you’re on the clock in your uniform, or off work doing beer-bongs with your boys from the 3rd deck catwalk, you’re expected to wear proper attire.
The Corps’ idea of “proper civilian attire” is somewhere between high school virgin and 48 year old divorced dad with a golfing problem. Apparently, it’s considered proper to wear a buttoned up polo shirt tucked into mom-jeans with go-fasters on your feet.
But like all things in the Corps, there’s a reason for this. If you look like a complete tool, you’re less likely to get in trouble. Reduced liberty incidents, reduced pregnancies and early marriages, reduced invitations to parties where there may be hard drugs and alcohol. It’s a win-win for Uncle Sam.