So, if were to believe Wally West, Joe and Iris have been known to refer to Barry Allen as The White Shadow. That almost makes Barry sound like some sort of Bond villain or an enemy of an olden time hero like Zorro or The Green Hornet. It also felt a little odd in how it could be taken as a term to exclude Barry and isolate him from the West family. It certainly didnt feel like a very Joe move, although in fairness, anything said by Joe West is taken infinitely better than something said by somebody else. That Joe is one seriously smooth cat. You could also read into it, putting on the amateur psychology hat, that Wally feels a little threatened by Barry as he looks to address his own daddy issues.