Why does my head shake? my head keeps shaking it kind of feels like a sort of muscle spasm and sometimes my head tilts forward or i pound my fist on my leg after my head shakes. what is this and how do i make it stop? and my lip twitches now, too wtf

See a neurologist: You're developing a tremor or some kind of hyperkinetic or dyskinetic movement disorder. It may be benign & treatable with meds, or it may be a sign of something more serious. Can't tell based on your post. There's no treatment without diagnosis; in other words, you can't make "it" stop without knowing what "it" is. You need to find out.