Why is it that certain foods are considered "breakfast foods"?  At what point in history did bacon and eggs become associated with breakfast.  Sure, you can have it for supper, but it's still considered a breakfast food. 

I find it strange that lunch and supper are almost universally interchangeable.  Whether it's a hamburger, a bowl of soup, or spaghetti, you won't be looked at strangely if you're eating it for lunch or supper.  But, if someone saw you eating any of those for breakfast, they would ask, "Why are you eating that for breakfast?"

I thought it might be because people want something light early in the morning.  But that doesn't work either.  A big plate of biscuits and gravy with eggs and bacon or sausage isn't exactly light fare for a still sleepy stomach.

So why do we have "breakfast meals" and "other meals".  Is this an American thing?  I wonder what Asian or African or eastern European cultures do with breakfast.  What did early American colonists eat for breakfast?  Did the Knights of King Arthur's court fry up some ye olde sausage links as the sun awakened from it's nighttime slumber?  How about in Biblical times; did they have one set of foods for early in the morning, and a different set of foods for the rest of the day?

After a two minute google search, I didn't find the answer.  That's because it's not a black and white question.  Of course people have been eating breakfast ever since they started getting hungry after waking up.  My question is why breakfast foods are generally different than other meals.  And that's still a mystery to me.  Another mystery is why Middle Earth gets to have Second Breakfast, when we only get to have one!  That's just not fair.