I think your memory may have an issue?
This is YOUR your statement I was replying to,
"....Anyway, I'm standing in the checkout line (floor is marked in 6 foot intervals) and some clown and his girlfriend comes up behind me, I mean right on top of me and is standing behind me and coughing... I looked over my shoulder and in a not nice voice, told them to back the H up six feet. Damn lucky I left my handgun in the car, I'm usually armed and I have a short fuse with stupid."
I didn't nit-pick anything, you said that didn't you?
And everything else I said I stand by, be careful who you puff your chest out to, you just never know these days.
How much personal space do you require before threatening someone? The 6' is a completely arbitrary value. A cough can travel over 100 MPH and a sneeze can travel 30' so why 6'? And is that a trigger value?
If it is such a hairline amount, again, perhaps shopping at amazon would be better for you. There are morons, idiots, klutz's etc. walking among us all the time, they can't be avoided.