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?
A very French joke: We used to use their email client and send to the whole team "Hey, I feel generous so tomorrow morning I will bring croissants for everyone. Look forward to it!"
The person would get plenty of "thank you" emails in reply and discover the trick. It was a small office so usually the person would bring the pastries. Yum!
Croissanting is an art form.
In my previous job we had the Constitution of Croissanting printed in every open space, because ignorance of the law is no excuse.