for stripping out not one but 2 of the bolt holes on the stem of my Surly. I was swapping the bar and putting the new one in and as I was tightening it down suddenly the bolt got all loose. I thought "shit. I'll just make the other ones tighter" since the bike is pretty much a cruiser and then SNAP, the other thread gives. And then I put it away and came inside. I've never, ever done that before and I was just using a multitool to do it, I didn't have a real allen wrench with a long handle. Every other stem I've owned was able to be tightened a lot. So, go ahead and laugh all you want at my idiocy.
P.S. At least it was a cheap stem.
I'm not only president of Head Clubbing for Men, I'm also a client.