Pontoon Scares Pro Golfer With Air Cannon

People have some pretty amusing reactions when they're startled. Like when you get your picture taken with a goofy look on your face while you're on Wild Thing at Valleyfair. Or when you're a pro golfer and a nearby pontoon boat fires an air cannon right while you're lining up to putt.

Check out the reaction of pro golfer, Zack Johnson during the John Deere Classic in Silvis, Illinois this past weekend. Zack's lining up to sink this putt when a pontoon boat floats by the TPC Deere Run course on the nearby Mississippi River-- and sets off an air cannon.

Some sources say the loud noise wasn't actually an air canon being fired, but was the pontoon's outboard motor backfiring. Either way, it was a loud noise that scared the hoo-ha out of Zack. Check it out...