First off, what is brandy?
In this instance, brandy is not a '90s female pop singer arguing with Monica over whom exactly the boy belongs to, but a traditional spirit made from distilling any type of fermented fruit juice (which, if the fruit is grapes, is technically wine) or fruit mash. For a sweet tasting liquor, it's fairly strong, usually hovering between 90-100 proof, and was traditionally served as a digestif (an after dinner drink to help your gut settle in). Usually dark brown in color, brandy is often mistaken for being a type of whiskey -- which it is not.
To fully dive into the dense, lengthy history of brandy -- we'd probably need more text-space than Moby Dick. To put it bluntly: it's been around for a very, very long time. As soon as distillation began being applied to beverages, around the mid-1500s, people all over the world began distilling wine and fruit juice, thus creating brandy. The word itself is a modification of the Dutch word, brandywine, which basically means "burned wine." See what I'm saying?