It can mean that you have a headache or something
If you mean as in the saying, "I see dead people", It's from an old movie called the sixth sense. An eight year old boy named Cole is possessed, or gifted, and sees dead people every day of his life, and finaly he meets a therapist whom he trusts enough to tell him his secret-I see dead people! Or you might just plainly have the ability to see people that aren't in physical form.
Means that it is dead.
dead end
No one knows for sure if dead people can see what you are doing. Some people believe that people with unfinished business become ghosts and can see what you are doing.
i see dead people (icy dead people)
its dead
No.
jesus
O sometimes some people just don't like you
Because they either want you to see them, or you want to see them.
It means that you have a very vivid and over stimulated imagination. Or it means you may be either Bi-Polar or Schizophrenic. Either that or you can see dead people, though that's the least likely scenario.
Of course they can. Living people see dead people every day. Nurses, doctors, paramedics, undertakers and members of the general public.