I have Aspergers syndrome which is a high functioning form of autism, I can understand how the use of the word in a derogatory form can be offensive to someone who has a first hand experience dealing with someone with austism, but for me personally, I just laugh it off, sometimes I use the term myself, sometimes I have my own moments where I am clearly autistic as shit. Obviously though I am a big supporter of people with autism seeing as I have it myself, I dont see that there is anything wrong with me, I am just different and think differently and the way I perceive things is different, but I refuse to let it ruin my day if someone calls me autistic as an insult, they just jelly of my superior Aspie brain power.