Nail In Tire Trick

Went to Target yesterday only to come out and find my left front tire flat. Of course it was pouring rain. Par for the course. To make matters worse, I have only changed a tire on my car one time previously, so it was get out the little owner's manual. By the time I got the tire changed and was ready to hit the road I was soaking wet and in less than a happy mood. This is the second time in about a month that I have had a nail in a tire on my car. The other time it was a bolt. I'm beginning to have some serious thoughts that this crap may be coming from work. The morons I work with don't give a thought about picking up anything they may drop in the parking lot. I can only hope, if this is the case, that one of them gets a bolt in their tire. Of course, this ain't gonna happen. I just don't have that kind of luck.