Anything Goes?

I met a boy today.
It was not as if we’ve never met, or even talked, but as these things often are
It was funny and strange, and quite bizarre.

Walking down the long hall, I caught a glimpse of someone through the wall
I was unsure of what I saw, so I just walked on down the hall
I turned a corner, but leaned back to have a look
And what did I see?
Someone looking back at me

Our poses the same, and do you know what came?
An image of Lucy playing dress-up as Harpo Marx
Two people moving the same, playing some game
This experience was quite tame, but I wonder if my expression was the same?

I crack a smile as I recognize that who I thought I saw, I saw
And wonder if what he saw, was what he thought he saw.

The game is up. The other one knows, I wonder if anything goes?