My sister once deserted a full cart and left the store because she saw someone she worked with and was embarrassed about what was in her cart - lots of junk food! One time I was in the store and I really wanted to buy some ice cream - but I knew I shouldn't since I was on a diet. So I was standing at the ice cream freezer just staring at the ice cream for I don't know how long when someone from work walked up and had been watching me the whole time. I was so embarrassed!
Anyway, I can't stand it when someone looks in my cart, so I try not to do that to anyone.