somniloquism
pronunciation: som-nil-uh-kwizm
definition: speech uttered in one's sleep.
My husband often entertains me, and sometimes scares the wits out of me, with his impromptu somniloquies. He startled me awake early one morning with a sharp, "Shh!"
I jumped out of bed and cried, "What?"
"Quiet! I'm on the phone!" he mumbled in his sleep.
I climbed back into bed and decided to be nosey, "Who are you talking to?"
"Just. A. Minute!" he whispered, "let me finish this call."
I was tired and afraid to provoke him by further interrupting his important "call," so I went back to sleep.
Perhaps you live with your own gifted somniloquist?