I am late to the party again too (been busy with stuff) but
My take on weeaboo is that they're so obsessed and annoying that they bother outsiders who know nothing of anime/cosplay. We're dressed in the weirdest clothes known to mankind, wearing the brightest colored wigs, pounds of makeup, and passersby HAVE NO FLIPPING IDEA WHAT IS GOING ON. We should respect public space and try to act calm as possible when we're around normal people.
^^^THIS THIS THIS SO FREAKING HARD.
This goes with any fandom, hobby, or anything that you are into. Myself and my friends personally do not want to be kicked out of places, scoffed at, or abused due to what previous cosplayers have done in an area.
For a different example to show that this does happen in other hobbies. Lets say there are a group of people who think it's fun to go to a certain part of a forest to go and shoot their guns, just for sport, they don't kill anything but they shoot at targets, eat food and have a good time. A sub group of that group now thinks its fun to go in there and kill animals while they are at it. Some higher ups now realize this is going on and shut down that area, no one with guns can go there anymore because a group of people didn't listen to the rules.
I have watched other cosplayers do the stupidest things, I can't even believe they would go out of their way to do it. And some of them just do it because they are in costume and for some reason that makes them feel high and mighty. Here's some things you need to do if you don't want to be labeled a weeaboo by myself, and I know some of my friends think exactly the same. Some of these things Dana already brought up.
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DON'T BE DISRESPECTFUL TO OUTSIDERS IN COSTUME. If they are provoking you then have at it, you have a right. If an old lady comes up and asks you to keep it down or if you could move it to a different area because he grandkid is having a birthday, just freaking do it.
ALSO DON'T ARGUE WITH COPS LISTEN TO WHAT THEY HAVE TO SAY.*
Would you run up walls, climb on trees, run up and down hallways when you are not in costume? Would your parents be furious if they saw you doing this kind of ****? DON'T DO IT. That kind of stuff is what gives us a bad name. People will automatically think we are immature and can't function in society. This is also why we get kicked out of being in places in costume a lot.
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Don't bring or wear things that are going to get you in trouble. Most places don't allow masks, don't bring them. Weapons? If they look real at all or if they are real and you are
GOING TO A PUBLIC PLACE LEAVE THEM AT HOME. Also don't dress like a slut or in something extremely revealing if you are going to be around children.
*I'm guilty of this sometimes too.
Watch your mouth. Especially around the elderly and young children.
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Don't be loud and obnoxious. If you are in a park or something and no ones around, who cares. If you are in a mall, store or in an area surrounded by people don't squeal at the top of your lungs, don't run around glomping people,
just chill the hell out.That's all I can really think of with this matter though at the moment. I'll leave it at that because if I sit here more I'll probably write another page and a half.