This one seems like a really trip for any golfing geeks out there. What do you think?
Golf - a good walk ruined, unless of course you have a remote-controlled golf ball, and then it's hilarious. Just as your partner reaches their backswing apogee (or whatever it's called) you set the ball trundling off the tee! It's exceedingly stupid and great fun.
The ball has a little spinning gyro in it, and when you activate it from the remote it spins off in random directions. The acceleration varies depending on the ground, and due to its small size it obviously works best on smoother surfaces such as green and tees. All you have to do is make sure you've completely charged the golf ball in its neat little charging cradle, switch on the transmitter, and select the frequency band shown on the ball. Push or pull back the control shaft on the transmitter to drive or vibrate your golf ball and wait for the inevitable laughs. Utterly daft, and it'll probably even improve your handicap.
Warning: Don't drive your golf ball in sand or through water or snow - we're sure you're never in a bunker or a pond, and playing golf in the snow is just plain daft.