Redditor colonelcrunch ingeniously replaced blades in his penknife with his car keys. It could lead to fun pranks, such as fooling first-time passengers into thinking that he's trying to steal his own car.
To find out how to make your own, watch a video at Hack A Day.
Link -via Hack A Day
Newest 1 Comment
Wait till the TSA confiscates the key!
Abusive comment hidden.
(Show it anyway.)