Hi SadLynda, welcome to the Frozen Face Club!
And CLKD, nah, I reckon they probably thought you were just dancing - remember The Stomp (nearly like stamping your feet!).
Hi LellyM, yeah 'horror' is bang on. There must be something in what you say, I wonder if forced cheerfulness can change your mindset, I mean actually make your own mind believe that everything is hunky-dory? I'm going to try it!
I'm back from my shopping experiment! Well it wasn't that busy so shorter on subjects than I'd hoped, but, I did look at people, and a few of them were looking straight ahead and walking around a bit 'stiff'-like and on a mission, interesting that all the people who I thought could possibly be anxious were all women on their own, the men all seemed to be the sauntering around whistling types.
One good thing came of it though, I was so set on looking to see how many other terrified people there were, that apart from just one jelly-like moment I completely forgot about how I might be feeling myself!