::thinks about all the times as a kid I punched myself repeatedly in the forehead, or headbanged dramatically, not to mention how I clenched my teeth and wiggled the entire bottom front adult ones out, or still enjoy self-administered blunt force trauma::
That was "stimming", huh?
but was the way that at the end of showers I would turn the water full cold and make myself stand under it for a count of ten under self-administered penalty of punches and bonus time if I flinched away?