Why? Because it’s April fool’s day, and nobody would take it seriously. Here’s a really good trick to play on anybody who has a Macintosh computer: Hold down the Control, Option, Command keys and the numeral 8 all at once. It takes only a second, and your former friend will wonder what the heck happened. Undo the damage by using the same keyboard combination.
Bonus: Do it when they’re working in Photoshop!
No Macintosh? Go to the nearest Apple Store and try it out! Wear running shoes.