Bowling courtesy, that is. When I was younger than a teenager, my father brought us to the bowling alley. The first thing we learned was not how to toss the ball down the lane. No, the first thing we learned was bowling courtesy. This includes not standing on the approach (the wood of the lane) until it was your turn to bowl, and to wait for the player in the two lanes to your left and right to finish bowling before even thinking of getting on the wood.
In today's world, courtesy seems to be a lost art. Yesterday I attended a bowling New Years Eve party. The one thing that irritates me more than ANYTHING when I'm at a bowling alley is when the lane next to mine has children and ADULTS!! that completely ignore bowling courtesy. Not only can it be dangerous as all hell (Hello, I'm swining a 16-pound ball through a half-arc; maybe you should keep your children on their own lane, and wait till I'm done?!!), but it's annoying, and distracting.
I don't even mind when your child misses his lane and throws his ball down my lane. Indeed, I even find that to be cute, and it's to be expected when you hand a 5 pound weight to a 5 year old to throw down the lane - it's not a problem, no ma'am, but could you please keep your stupid little brat behind the wood when it's not his turn to bowl? Thank you very much.
On top of which, it's very difficult to approach a parent who themselves doesn't seem to know common bowling courtesy and ask that they preach it to their children. It's embrarrasing for one, and you're trying to tell them to control their family, always a mother-bear reaction just waiting for you. Sigh - well, I bowled a 168,169 and 142, so didn't do too bad, but I'm sure I could have done better if I wasn't worried about cracking open Junior's skull in the next lane.