I have been away from this thread for too long it appears. Maybe you missed the entire point of this thread asking for people's opinion on the matter, then I listed some things under controversial opinions, and used the word should. You seem to fundamentally misunderstand the difference between the word should and must. I am not advocating for any legislation on this matter. I am pretty surprised that some people do not associate a hat with team allegiance? I feel like that is the overwhelming majority opinion. If I see someone wearing a Yankees hat, I do not think they are a Brewers fan. I do not think they are a Reds fan. If I talk to them and they tell me they are a Brewer fan, I will probably ask them why they are wearing a Yankees hat. I will then personally think they are not much of a Brewer fan (it is possible this assumption will be wrong, but it will almost always be correct), and when I engage them on Brewer related news they will not know what I am talking about. In fact, when I talk to them about general baseball I will quickly realize they do not really like baseball and can only repeat cliches from ESPN regarding baseball happenings of the past few years. There is a 100% chance they do not know who Lefty Grove is (this cannot ever be wrong). I work with a decent number of out of state people, and just recently a newer guy was wearing an Astros hat. I figured I would make him feel welcome by starting up some baseball chat when he informed me he is in fact a Red Sox fan. I became concerned he did not really like baseball or follow it, so I asked him who his favorite Red Sox player was and he said David Ortiz which confirmed my theory. (The correct answer is Ted Williams by the way). I then threw a out a good baseball fan gauge question: Name the 8 ways the batter can reach first base. (H, BB, HBP, E, FC, CI, OB, K). He could only name four. There was no further need to confirm the Lefty Grove theory. So does this rule just apply to team hats or any hats? Does it also apply to other articles of clothing? Should I eliminate all mirrors from my house and get dressed in complete darkness so that I'm not influenced by something as girly as personal appearance? Oh, please please impart your wisdom on me, I want so much to be a real man and fan like you. It only applies to hats, which is why it does not say "You should not buy any of your clothing because you like how they look". I could see where you are coming from if I typed that. Hats are different from other clothing because the usage for hats are (in order) 1. Show team allegiance 2. Shield sun from eyes 3. Look cool 4. Make people think you are not bald 999999. wear backwards Since you asked, being a real man really has nothing to do with being a real fan. To be a real man you need to be excellent in the fields of: honor, toughness, courage and carpentry. You actually don't even need to like or follow sports to be real man, I don't even think Abraham Lincoln played in little league. To be a real fan, you should not show support for other teams. If you think wearing other teams gear does not signify supporting them then that itself is proof you are not a lifelong dedicated fan because you would just know this deep down in your soul. You will have had too many run-ins with fake, casual fans wearing random hats to let this go. You can think otherwise but you would be wrong. I understand there are some legit circumstances for this to occur, but I consider these fans to be on some sort of second tier. Like how Tom Hagan can become the Don's consigliere, but he cannot become a made man because he is not Italian. If I see you wearing a Brewers hat in the winter I expect you to be able to talk about the Packers. I feel like it is not completely valid for you to use the term "we" to describe you and other Brewers fans because you are not really in our inner circle if you have other non-WI allegiances. This does not apply to any out of state college if you went there. No Rick, you are the hero In summary, if you are wearing other team's stuff for whatever reason you are probably not the most serious Brewer or baseball fan. This is ok, you can choose this option in life and achieve great success. However that is what I would think and I would usually be right.