Working with a car on a lift can be a dangerous if you don't understand what you are doing. Procedures have to be followed and safety is the name of the game. As one very lucky mechanic learned, even when something looks centered on a lift, it may not be safe.
Timing is, as we often hear, everything in life. The guy in this video should feel pretty good that the other person came in to talk to him. Otherwise he might have been the meat in a Dodge Ram/Concrete floor sandwich. Slip off the jump to see why garage lifts require that you always stay alert when a vehicle is in the air. Thanks for the tip, IHateAirplanes!