(This is half of a Sunday Cornered, using only one of the two separate joke panels.)
Underlying this is a pretty standard modern-office joke — make yourself indispensable and they will go to lengths to bother you on your off-time.
But how are they doing it? Is this just an arty juxtaposition of two well-separated scenes? Or are they linking by video call, so that he can demonstrate the technique, for someone back at the ranch to execute? Or have they borrowed a transporter from a friendly Star Trek franchise; or using a drone to deliver and retrieve the printer and materials to his lake? What is that vertical line? Or are vacations now required to be taken in-office, courtesy of a crack art and special effects department? Or, indeed, by holodeck?