It's April Fool's Day and of course I want to pull some sort of prank on my kids. However, to be respectful, you don't want to do anything that could possibly upset someone or cause any additional stress. So, my wife and I started searching for innocent and harmless pranks and came across this one...
I never knew that you could do this, so if it's not new to you too, my bad. But, on your PV, did you know that if you press Control-Alt-Arrow Down at the same time, it will flip your screen upside down? That's what my kids are waking up to this morning. It's a harmless prank and you can get a quick laugh watching them freak out. It's simplet to fix it too, just do the opposite: Control-Alt- Arrow Up

Keep in mind that it might not work on laptops or MACs, but it worked on 3/4 of my computers when I tried it.
Good luck and be safe out there! -Jay