I supposedly do, but no recording of it exists as evidence.
I, however, offer these two stories of my brother from high school instead:
Once, my boyfriend was sleeping in his room sleeping on the other bed. My brother started making some sounds that sounded like words. I said "What was that Dan?" and he replied "Licence plates." What you have to understand is my brother had just aquired his first "real" car, as in not a hand-me-down from a family member, which he purchased and bought himself (a 79 Malibu, for you car enthusiasts). I replied "Dan, you already have license plates." His response: "I know, but I want those.
The second time I had a hillarious sleep talking moment was when I went to get Dan up to take me to school (he was still living at home, but had dropped out in order to NOT be in the same grade level as his little sister). Upon telling him it was time to get up, he sat straight up, pointed to a laundry basket at the other side of the room and said "It's over there" fell back into bed and continued snoring.
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Mediocrity at its most average.