Does anyone else have this "issue"?

It's not a serious issue or a problem really, but...

On earbuds or what you want to call them, earphones... The ones you put in you're ear to ear the music.
They are labelled "L" and "R" for left and right (I'm smart) but the L one only fits on my Right ear, and the R one only fits in my left... Is it suppose to be like that? It's not just one pair it has been with all I've ever owned