Did my reflection go crazy?

As I arrived at the office this morning, I was shocked to see a strange reflection looking back at me as I swiped into the building.  Something was wrong with my reflection!  It was the wrong color and I was taller!Uh, it wasn’t me.  There was another fat guy on the other side of the door, and for whatever reason he mirrored my movements on the other side of the door.  Strange.