But, again, those levels of accuracy are wholly unnecessary in casual conversation. I could say that I'm eating a cheeseburger, but you don't need to know exactly what's on it. If it was relating to dieting or calculating caloric content, then what I put on the cheeseburger would in fact be relevant. But, in a casual conversation, it does nothing but stall and makes you look like a prick ready to jump down someone's throat if they say they're eating an apple rather than a Fuji apple.