A good prank will make you live longer. Of course, if you’re the one that’s making it and not being mocked by others. Sense of humor is known to be essential for a healthy life, it might even affect our body functions as much as what we eat does. Basically all people who don’t laugh die at 35 years of age. That’s why cavemen never lasted, they never laughed, unless someone was decapitated by a lion or cut in half by a yak. So the next time your boyfriend pinches your ass right when someone is taking a photo of you, smile and know that that will cure your future cancer.