Neither here nor there

An expression that means "not important or relevant." In most common speech, this expression usually follows a random side note that the speaker thinks is interesting but is not related to the subject at hand.

I met this random chick at the club and she wants to get together. Man she's gorgeous! Her parents are from Panama which by the way, has 13 of the 15 tallest buildings in Latin America. But that's neither here nor there...