Today was my day for multiple errands. In the middle I decided to stop by SA to grab a fountain Diet Pepsi. Since I skipped the Milk Duds, it was more of a snack than an actual meal. Anyway, I had to ask the attendant to change the Diet Pepsi. As I turned to go back toward the machine, this white haired skinny little man almost knocked me over trying to get to my previous place in line. "My bad," he muttered as I politely (actually polite, yes) said, "excuse me." What makes someone with white hair, obviously elderly, utter "my bad?" I was a bit disconcerted as I waited for my fountain soda... my bad.