This week we feature not one but two videos of guys (of course it's guys) who've modified dirt bikes to propel boats. To me it seems like the worst combination of motorcycles and boats: noisier than an outboard, and short on speed due to a desperate need for a longer "shaft." But the riders sure seem to be having fun.

The first video is higher quality but the action doesn't start until more than half way through. The second, below, definitely wins the contagious giggle award.

Enjoy, and happy Monday!