Common sence is a traight that we all have yet don't always use. Confusious says never pee up hill or you end up with soiled shoes. This while funny is true yet there is someone every day that ends up with pee soaked shoes.

I recently had an accident involving a drill bit, a drill and my finger which resulted with an inch and a half of a drill bit protruding into one side of my finger and pushing the skin out on the other side. Bone infection, loss of movement and usage, and nerve damage resulted from the impact with a possiblity that I might not fully recover feeling or usage of that finger.

Common sence told me that it was stupid to do so before I even started to drill the part tht I was holding in my hand yet I did so anyways. I just wanted to mark it with the bit. Instead I marked it with the stain of my blood. Stupidity really.

So what have you done to that went against your own common sence and what was the result of it?