Let's just end the simulacra and embrace the absurd, take a video of yourself walking into the room, acting surprised that someone's on a call and awkwardly backing out of the room, if your platform supports animated backgrounds, use it.

Take anyone who notices and asks if you have a previously undisclosed twin-sibling out to dinner for being observant.

Bonus points if you wear the same clothes as your video self to really mess with someone's head