Usually, my first thought when there is a mechanical problem is "Grab a hammer" but you would be suprised at how well that works to fix people screwing with you bike as well. That's frakin' rediculous. Oh yeah, and welcome to the KF family. Remember... the hammer is the master tool that fixes all!

 

A hammer would fix that dudes face for messing with your bike too!

 

+1[:@]