rats. i don't even like looking at them in a film or whatever. i used to have a recurring nightmare when i was young that i had floor length hair and i was surrounded by rats trying to chew it. it's definitely an inherited fear as my mum is terrified of them too.
being trapped somewhere and unable to escape. to the point where i sometimes have a minor panic if a tshirt gets stuck on my head when i'm taking it off
falling over and knocking my teeth out
being kidnapped by a serial killer and tortured for days on end
becoming paralysed and unable to move/communicate/end my own life