Ping pong balls won't really hurt that much when they hit you. Right? Not if it is traveling at hundreds of miles per hour. You probably don't want to be in front of it. Because that's what Purdue University Professor Mark French's cannon did to a ping pong bat sending it 900 miles per hour. Or in other words - Mach 1.2.

Not even the fastest player will have time to return the serve. But then again, we doubt they'd want to be in front of it. Check it out in the video below: [YouTube via Gizmag]