I think most of us have done at least a couple of things of which we are not proud. As for myself, I've really made a dedicated effort to cut down on any really demonstrative expressions of anger/frustration. I actually thought that I wasn't that bad about this, and, compared to many others that I bowl with/against, I'm not, but my wife still told me that it makes her feel foolish when she can hear me curse or something. So now, I actually have taken to just cursing on the inside. We all get frustrated, but acting out is childish and distracting to those around you. Don't ruin the fun of others just because you're having a bad time of it. Remember that your actions reflect on those around you as well.
OK, now that I'm off the soap box, here are a few doozies that I've seen:
A drunk who would moon the pins at least once a night when leaving a corner pin. It was mildly amusing, on a stupid level, the first time that he did it. After that, he just looked completely stupid.
Last year, a guy that I bowl with, a very good bowler but a real hot head, got mad after a stone 9-pin cost his team a game and him some money. Without looking he grabbed his ball off the return and threw it behind him toward his lane. Of course, he missed his lane, hit the divider between the two and sent his ball into the adjacent lane, almost taking out another bowler, who, as you might expect, was less than pleased. Feeling very foolish, the guy who threw the tantrum quickly said he was sorry and got out of there. I almost felt bad for him. He's not a bad guy; he just doesn't control his anger very well.
I was bowling against the team captained by a friend of mine. We were both the anchor men, and the game was coming down to the 10th frame. I took an eight count on my first shot, meaning that he'd just have to get decent count to beat us. He goes high and leaves the Greek church. In anger, he punches the seat next to him with his bowling hand, breaking it in three places. He tried to throw the ball at the spare, which still could've won them the game had he taken 3, but his hand hurt so badly that he dropped the ball right into the ditch: we won. I can only imagine how he would've reacted if he had been bowling the team of someone he didn't like!
I used to bowl with a guy who, when packing up his bag after a bad set, would use two hands to dribble his ball off the floor and back up to his hands. Well, one night his white dot split into 2 nice halves, one of which threw off some shrapnel that cut his leg. Classic.
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I can't bowl 300, but I can bench 345 : )
I provide the muscle for the Fellowship of the Saws