So, for background, today at work I ran into a guy that I knew a little bit pre-transition, because he worked here once before but left for a while. I walked past him today as I was walking with my boss before a corporate lunch thing and he just goes "Hey I don't think we've met" so, as I usually do, I took the easy route and just went along with the notion that we've never met before; I mean, technically he's never met Andrew, right?

I guess I'm just curious if anyone else does this, and if not, how you go about explaining quickly that you actually have and why your face is 100% unfamiliar.
On the bright side, I guess that means I'm pretty darn transitioned and passing? He would have definitely remembered pre-transition me, I think, since everyone at the company knows my mom and usually remembers me because of that. He and my mom are pretty friendly, too, so I guess I've changed a lot since he left!