Last night my best friend and I fell asleep in my room after a long night at the gym. At about 5 in the morning I got up to move to the room down the hall while my friend was still asleep. About 5 minutes later my friend came down the hall, tapped my foot, and woke me from my sleep. He said he'd thought I was still in the room because he heard me talking to him. I told him I had been left the room 5 minutes earlier while he was asleep.
He said at the foot of my bed I was standing there talking to him, recounting stories about our past as friends, or what he perceived to be me. I told him this was not true. He then said the person began moving his feet, then going up his whole body shaking him. He said he'd "fought" it off, and when he finally sat up the figure wasn't at the foot of the bed anymore, but lying next to him, but it's head facing the opposite direction. He said he thought it was me because it was my skin complexion and everything.
But he jumped out of the bed and came to get me because he'd known I had left. Before we had gone to sleep I was laying down talking, my friend has a tendency when he's tired to listen while his eyes are closed, but he's not sleeping. I told him it was probably all in his mind or he had been dreaming, but he assured me he was awake when this happened, and that he perceived the the thing to be me. He told me it even "laughed" the same as me and talked just like me as well.
Needless to say I was afraid. What could this have been? Just exhaustion after a long day or something weirder?