Is "R" a Vowel?

There's a good argument that the letter R is, at least sometimes, not a consonant at all, but a vowel. Does that mean your 1st grade teacher was lying to you? Not exactly. R is an incredibly weird letter, with so many different sounds and functions, it's a wonder that we use one symbol to represent them all. And how people pronounce that one letter can speak volumes about their history and social