The nature of pranking has changed due to the internet age. Where once, a pie to the face would do, now it seems pranksters feel like they have to take it to the extreme. The following video is about as extreme an example of pranking as I can find. Keep in mind, it may all look traumatizing, but no one is actually being hurt. I would say NSFW, but there is stuff worse than this on regular TV now, so you get the point. There's some fake violence here but nothing you don't see daily flashed on the news and interwebs.
I will make a bit of a prediction, though. We live in a world where MANY people now carry guns. It is only a matter of time before some quick thinking citizen who has seen too many horror movies gets this prank pulled on them and instinctively shoots the person as a matter of self-preservation. Just calling it now.
Sorry, but 2014's version of jumping out and saying boo seems pretty insane to me. Pranks need to chill out a bit. It's all fun and games until someone has a stroke or shoots an actor.