(In my store, we sell mainly natural real fruit smoothies, but we do have additions like vitamins, antioxidants, and whey protein. All of our additions are listed on our menu. A lady who looks to be in her mid 40s approaches my counter.)

Me: “Hi there. What can I get for you today?”

Customer: *reading addition section* “What is protein?”

Me: *thinking she unfamiliar with “whey”* “Well, it’s protein made from dairy that’s been processed into a powder. Ours is vanilla flavored, so it goes well with all of our fruits.”

Customer: “Yeah, yeah, but what is protein?”

Me: *confused* “Protein? You mean the like the stuff you normally get from eating meat or eggs?”

Customer: “Yeah, I’ve never heard of it before. What is it?”