consider this. If everyone in the world was wierd. and they are. Then being wierd would be normal. Not being weird would then become wierd. But would being wierd mean you were weird or normal? Whoa
Being weird means being odd, unusual or/and bizarre. Your opening statement, "If everyone in the world was wierd", is already fallacious so the rest of the logic flow is also false. For simplicity sake let's narrow the weird thing from a general attribute to just eating poo. Eating poo is a weird thing to do, and most would agree that it's disgusting. But if everyone in the world eats poo, then the action itself is not weird. Everyone(or almost everyone) does it, so eating poo is already the norm. Eating poo is no longer described as different, odd and unusual but not eating poo would take the honor of those descriptions. You follow the rest.
Technically, everybody who has eaten fast food or United Airlines food has eaten the equivalent of poo.
i think everyone in the world is different than eachother no matter how much they strive to be the same.