Why? Milk is produced directly from the bloodstream of cows. The blood also helps create the meat. Milk is beef, of sorts, ergo, Beef is Dairy.

Why do we call milk, milk, unless it comes from humans then it's 'breast milk'? Milk - which is a really strange word if said high, or slowly - is what mammals feed their young. We never say 'udder milk' when referring to cows.

Why do we eat pizza and pies from the inside out? Not crust-first like a sandwich.

And you've been opening bananas wrong: