Does anybody else do this, or is it just me? I love making low-pitched "euhhh" noises (similar to those with low-functioning ASDs), clapping my hands, jumping, punching walls, screaming out random phrases/noises, etc. I do it several times a day. I also walk on all fours sometimes, and make tractor and animal sounds. I also clap my hands and move my body parts in a chaotic manner while laying down on my bed.