Warning: turn down your volume before you press play; there's a lot of screaming here. And it is hilarious.
The age-old prank of scaring your friends and recording their reactions has provided wonderful Internet videos for a while now. This clip gives us a chance to enjoy the biggest freakouts from unsuspecting victims. Not only do people jump and scream when they're scared, but they usually punch when confronted with an unexpected intruder. Everybody wins!