This is a fun set of golf balls. The three types of exploding balls are single use, massive cloud of white powder, a cloud of water, and a streamer. The fourth, unputtable ball, is reusable. Nobody will ever mistake these balls for real golf balls, so the chances of slipping one into a golfer's bag and playing a trick on them is slim to none (every golfer looks for the brand marking or a number on the ball, these balls are perfectly white with no markings).
The funniest ball is the unputtable. It feels a little tiny bit light. The key is a heavy weight inside the ball that makes the ball wiggle all over the place as you putt it. It is honestly impossible to putt this ball straight.
As a joke, these are pretty darn good fun. The price per ball is about right - this is the most economical set versus the others (there's an 8 ball set and you can buy each of these as singles at a premium price). Shipping was perfectly fine, none of the balls arrived cracked.
The exploding balls do leave a fair amount of debris, these are a hard plastic shell that cracks. None of these will harm your golf club.