I got pranked with this website: https://updatefaker.com/
I recently switched from manual labor to office labour and learned the hard way to lock my screen :)
In hindsight it was hilarious, but I waited for maybe 20 minutes before I got suspicious. How can I take revenge?
Small post it note over the sensor under the mouse.
Scotch tape also works for this.
Clear tape works really well, because the mouse will still work, but terribly.
Oooh. Love it.