In your opinion, what is the most common violation of uniform regulations, and are you guilty of it from time to time?

I'd have to say hands in pockets. I see it very often, and even in my short two years, I've seen a spike of it amongst those with less time than me. Being in Honor Guard, I often see ribbons mounted wrong, buttons undone (which I'm a violator of myself, at least in NWUs), and sunglasses. Reflective lenses is the most common thing, but every now and then I see a pair that isn't completely matte black or whatever the case may be.

because I'm so blonde, I could go two days without shaving instead of one.