[ Different universe. Barry isn't so dense that he hasn't heard of the theory of multiple universes before. Just as a philosophical exercise, mind you, but... Between this other Flash, and the kid with his face, and the girl calling herself Supergirl, Barry can start to put the numbers together to have an idea what's happening. ]

A few. [ To say the least. ] You know Flash.. the Flash. [ That sounds good, he should add a "the." ] Who does that make you, then? I mean, you dress like me, you run like me...

[ Barry squints. ]

What's your name? If that's not crossing a line.