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The act of answering a telephone call or having a conversation with someone while sleeping, then later having no recollection it took place.

Best utilized when asking favors of friends they would normally not agree to.
Ryan: Hey John where are your car keys at? I'm going to be late for my date tonight.

John: Huh? I didn't say you could borrow my car...

Ryan: Yea you did, I asked you this morning before I went to work at 5:30 and you said it was cool.

John: Yea, I was sleep talking, ass hole.

Ryan: That sounds like a personal problem, now give me your keys!
by Mr. Bad April 27, 2011
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