Funnily enough I was having a conversation related to your question with my son today. He's got asperger's syndrome, which does explain a lot of his behaviours... however, I've been getting sick of him saying, "I can't help it, I'm aspie" recently. For example, we went to the pictures today, and as if breaking wind loudly and unapologetically weren't bad enough, he had to cackle and grin like a loon about it. He also kept talking very loudly over the trailers, making wise cracks. For example, there was an advert for beer which said, "grab a bud", which, if you spoke Irish Gaelic, would be a pretty appalling double entendre. My son had to translate it at the top of his lungs, and figure out other embarassing things one could say in English that sounded bad in other languages.

I had to keep telling him to not talk so loud, reminded him that he was shouting, and he actually said, "I can't help it, I'm aspie."

Fortunately we'd sorted out appropriate behaviour by the time the film started, but I was irked by his falling back on the "I've got a diagnoses so I can do what I please" excuse. yes... I think there's a risk that we can fall back on a diagnoses, if it's there. On the other hand, if we're aware of the difficulty, and can see why it needs to be fought that's different.

I don't know whether you'll always be on this roller coaster... I certainly hope not.