You just have to laugh at dudes like the one in the first story.
I have a similar story to Herk Driver's. When I was a casual LT @ Eglin, I was walking from my car to the finance building. I happened to pass a 1Lt that was wearing his blues, and as I passed I said "How's it goin'?". After passing each other, he then stopped me and said "Excuse me, you should probably salute officers that outrank you." I was quick to reply by saying "I'm sorry I thought you were a LT." He then proceeded to tell me that he was a 1ST Lt, not a 2nd Lt. I then snapped to attention and popped him a salute, with a sarcastic "Sorry, SIR". What a tool.
These people demanding respect and salutes from other Lt's really crack me up. Most of them obviously have a self esteem problem.