[padubis]

And I would literally bar anyone who used the term “dive bar”. A dive is a seedy bar, so a “dive bar” would be a “seedy bar bar”. This kind of redundant nonsense is for naive dilettantes who have never had the first-hand pleasure of getting good and oiled in a real dive. (burp)

[CGASMIA68]

No dif than DC Current or AC Current

That the equivalent of Direct and Alternating Current Current.
But hey who’s counting ??

[fr_freak]

A dive is a seedy bar, so a “dive bar” would be a “seedy bar bar”.

Not sure about that one. I don't know the history of the word "dive", but in my lifetime it has been used to describe any place that is rundown, seedy, etc. It could be applied to motels, coffee shops, and bars, so saying "dive bar" is just clarifying what kind of dive you're talking about.