I was several years into my Spanish studies when I started hearing and seeing things like: Hola, ¿Cómo estás? Bien, ¿y vos? ¿De dónde sos? ¿Vos qué hacés? Vos? Sos? Hacés? Say what? I couldn’t help but think, is that even Spanish? How could I have gone all these years and never have heard these terms before? So what is …