Check out Bike Balls: the world's crudest bike light

"It takes grit, wit, and huge balls to ride in the city so show 'em what you got!" say the inventors of 'the world's most overconfident bike lights', and they're looking for backers on Kickstarter.

If you want to show them what you've got, perhaps tie these lovely bike balls from behind your seat for other road users to see you in the dark.

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Easy to attach to your saddle rails, the Bike Balls act just like any other rear light, just in a novelty shape, with its inventors claiming the design provides greater visibility than other lights. Simply squeeze your balls (the ones on the bike) to turn the lights on.

The whole ball housing glows when the lights are switched on, with two flashing 'party modes' to go with the 'constantly on' function. If you're going to have your balls on show, you may as well have people notice them, I suppose.

There is a bit of a downside, however, with the inventors advertising the fact that you need to attach a cable tie to stop your balls from dropping, meaning you'll have to ride with them swinging behind you at all times.

Also, if you're a connoisseur of a saddle bag the Bike Balls may not fit your requirements, which is a shame.

But overall what could go wrong with a pair of glowing balls swinging from your saddle? Anything that keeps you safe on the road is surely worth a punt.

But remember, gents, if your actual balls are that shade of red, it's probably best to hop off the bike and go and see your GP.

A donation of just $13 is enough for you to get some Bike Balls in your hands, so head over to Kickstarter and inspect them in more detail.