I have high functioning autism.
I generally have trouble noticing it, to be perfectly honest, and when I do, it's me just laughing at really bizarre, off-colour humour that nobody else finds funny because they don't quite make the connections I do. Or rather, I don't make the connections they do.
Though it does get annoying at times when I stutter and stammer and find it difficult to strike up a conversation with people whom I later learn are very friendly.