Admittedly, it's a good prank. Old people don't know they need mice for these desktops, so within minutes the screen will be smudged with fingerprints and the keyboard closely inspected for keys.
Also great contemplation over that weird arrow, stationary on the screen.

Proud I did an ink. Good me.

As always, I can sketch how I like, but the inking process is undo-less, for the experience.
Remember that you can suggest things if you want, just drop a comment here or on the appropriate journal!