This is very true especially when you are all alone and you are the first person in the grocery, its like you said its like " the eyes of the security guard is drilled on you" like your the baddest person in the whole universe, and it ends up with you rushing up to buy the things that you need and just forget the things that you want! Hahaha! I think we all have this kind of "Security Guard Moments", and just thinking about it gives a tickle on our head!