Next time you shank your ball into the rough, reach for your Big Daddy and calmly walk toward your ball. While the rest of your foursome is chortling, flip open the secret compartment and whack away any grass in the way of a clean shot out. Some people might call this cheating (the same people who don't allow mulligans), but we call it smart golf.
Get one for your favorite golfer, and watch his game improve overnight. Requires 6 AA batteries (included).