I've seen people possessed. My younger brother, younger sister, and her friend. They were quite frightening experiences, especially when my siblings were possessed at the same time.
I once met this biscuit that claimed he was possessed. He disappeared and was found looking a thousand times uglier and less delicous in a sewage treatment plant a day later.
It was scary....
I think your "friend" is A.Playing with you, and from the sounds of it, your gullibe, or B. Has a split personality, because rarely are people TRULY possessed.
If he was possessed, wouldn't "duke" be talking, instead of him?
my friend clames to possesed but it is only when he is hit on the head. he says it is duke, a gost from a difrent time period and dimenshon. now i can senes a flustuation in the energy when he dose this but i want to know if he is lying dose this sound like anything?