My Grandmother was over my house and I made us sandwiches. As I picked one up to eat it she looked at me and said "YOU CAN'T EAT A SANDWICH LIKE THAT PEOPLE WILL THINK YOU'RE STUPID"
It's because (something I hadn't noticed before) I hold my sandwich with my thumb on top and my fingers underneath instead of the other way around. Was my Grandmother overreacting or will people think i'm stupid by the way I hold a sandwich? 