Believe it or not, I have ADHD and am aware of stigmatization of stimulant medications. I don't need to be coached on how to make light hearted jokes about amphetamines on the Internet
I went into that joke without ADHD or it's related stigmatization in mind. I viewed "Adderall?" as more in the context of recreational use be it partying or something like cramming for a test. There wasn't a previous dialogue about ADHD established so it never entered my mind that that's how people would view it. I wouldn't make that joke in that context as it is insensitive. However, that wasn't the situation and I still don't really see my comment as insensitive or reinforcing stereotypes/stigmatization of ADHD. It's not that I don't care, I just disagree with the interpretation of my comment in that way