I can't watch any movie/series without doing something on the side. Like playing a game on my phone I don' need to pay any attention to while paying full attention to whatever I'm watching. Or maybe peeling an apple and cutting it into small pieces and eating it. 

Before anyone asks, yes I have ADHD. I can only sit and read something that greatly interests me, even then I feel like my ass is on fire while I do it and I have to move and do something dynamic.