Life's simple annoyances

There is one thing that I've noticed lately, and especially during fantasy football viewing. I fall victim to this as well. So you say something and a few minutes later someone else says the same exact thing. See where I'm going with this, people react like the person put on steel toed boots and kicked their dog. I guess not having people listen to you that gets you mad, but is it really that bad. I know its annoying and I'm trying to figure out why this is. It is usually the persons fault since they are usually distracted. If Americas Most Wanted had a list of the top 10 offenders then Shamps would defiantly be number one. On Sundays with a laptop in tow he is probably numbers 1-10 with a 25 million dollar bounty on his head. I'm waiting for that long haired on tv to come barging through the door to capture pamps, dog the bounty hunter is the guys name i think. He will almost certainly say the same thing you said moments after you do. It is usually a score that happened or a stat that is interesting. He usually gets reamed out for such putrid behavior.
There are usually levels of responses people get. the first one and most common one is the straight out yell, the "hey, i just said that". this is the most frequent and best to use as long as the yell is not overboard. If the same person has multiple offenses towards you or others in the room then you are allowed to yell even more with each subsequent offense. It is hard to respond to it, you can either say sorry or stay quiet there is no real fighting it.
The second way to respond is the sarcastic response. the good ole' "man, wish i had said that" This one gets tricky for the person because they usually say the original statement with such gusto, like they are adding valuable information to the conversation. I love when the person is so happy to figure something out or is anticipating congratulations for saying something with such smarts and gets utterly crushed when they hear that it was said moments before. I love when the person says it, and in their mind they don't think anyone heard it so they say it again and then get yelled at. Those are classic moments.