I love being in a deployed location wearing PT gear (not really) and walking by a fellow Capt that is in uniform. I look somewhat young for my age, so most think that I am somewhere between SrA-SSgt. When passing, I like to scratch my head with my right hand just as we are about to pass. Sometimes they'll bite and start to salute. Kind of brightens up your day a little bit...kind of like seeing someone trip.
Here's my funny desert story--
We had just flown a 12-hr OEF sortie and made it back just in time for breakfast. I had quickly changed out of my flight suit & into my PTs. I was then walking to the DFAC with my engineer who was still wearing his flight suit. On the way, we came upon a shoe-Chief that was walking with a shoe-Captain (both were in uniform). The Capt was looking directly at the ground when we passed, my engineer didn't salute. Of course the Chief noticed this right away and stopped. She then spouted off "Do we not salute Captains anymore?" My FE then told the Chief that he was going to salute, but the Capt wasn't even looking in his direction. She then said, "Ok, thats fine, but what about you?" (Obviously talking to me). I then told the Chief that I don't salute those of the same rank. She & the Capt both looked at me like I was lying out of my ass. I thought for a second that the Capt was going to ask for an ID in order to verify that I hadn't "broken the law". I was hoping that he would, but he never did. Good thing we had only been in country for a couple of weeks, because if we had been towards the end of the deployment, I probably would have said something to them both that would have got me into trouble.