It's a powerlifter holding the traffic sign “no entry” .
I had this idea walking down the street from the gym, seeing a no entry sign.
As you can see there are two versions of the sign, feel free to scale it to your admired size.
The diameter of the sign is 10cm.
You can easily install it on the door with double-sided tape to make sure nobody enters your room.
I could imagine this sign hanging in front of a staff room at the gym.
Feel free to contact me if you have any questions.