What is your biggest pet peeve?

Sandbagging the PT test - Soldiers (NCO's included) hitting their number and then tapping out - lazy people drive me crazy.

Mine is honesty, some of these other posts are valid as well. Like uniform corrections can eventually be learned with the proper guidance. But honesty is a trait that is almost impossible to break.

rude people

Inattention to detail.

Without a doubt, seeing Soldiers, Airman and the occasional Sailor in Walmart or the grocery store in utilities. Drives me absolutely bat shit. Of all the uniforms that are issued, why does DOD allow troops to run around in their field uniform. For that matter also flying on commercial air on leave. Why not put on either service or dress uniform and look sharp instead of looking like you just got up from a Shamu nap under a tree. This is also a recent thing. My opinion only. The Marine Corps doesn't allow this behavior. Wear your chucks all you want to Walmart, but get out of the car in utilities, STFB. Semper Fidelis.

People that back into parking spaces. Not pull through, but actually take the time to back in. What are you going to do that you need to leave that fast, rob a bank?

On the military side, is people that can't render a proper salute. The vertical salute dives me absolutely bat shit crazy nuts.

My biggest pet peeve is the train to standard not time method. EX. I say that because PT is mandatory but to extend the time shouldn't be mandatory because you can get a great workout so to me time has no place at PT because in 45 mins if you apply yourself you can be crucial

My Pet peeve was a bunch of POGUES who never left base complaining about people with hands in their pockets.... and other stupid garrison bs.

"goodness sake show some discipline!"
First of all having your hands in your pockets in in no way showing that you do not have discipline.
Like others have said a rule should have a good reason behind it.
I had plenty of experiences in the Navy where gloves were not an option because of the nature of the work yet there were times that it was below zero outside and the little bit of warmth made life a little more bearable.

Secondly it is the SNCO that has a warm office, a warm cup of coffee and much better accommodations that is yelling at the junior who is working out in the cold or under much more uncomfortable conditions.
Sorry but complaining about unimportant things like having your hands in your pockets while you are taking a short break and trying to base someone's career on that is just you nitpicking. And it is a reason that I am glad that I am out.

In my days as a First Sergeant I would always encounter individuals with hands in their pockets and remind them about being professional. Should they respond back with anything other than thank you or an apology I would ask them if they still had the gloves that were issued to them in basic and also if they spent their annual clothing allowance appropriately.