I did this same thing once! Only it’s because I have an astigmatism.

I was at the counter of a Chinese food stand trying to read the overhead menu. If I stretch my eyes out it will improve my astigmatism somewhat, so that’s what I did so I could read it. It only hit me that I was doing something wrong when I noticed two of the Chinese guys behind the counter staring at me. I was mortified! I left. No Chinese food for me that day.