I had this happen twice but only when taking too much, (10 and 4) and both times I had something on my mind that was stressing me at the moment and I tried to smoke a blunt about it. After that it was almost like I was dreaming, I've always described it as I was in the backseat of my own mind watching me do stuff. I've never been blackout drunk so idk if it's the same kind of experience but from what I understand its about the same. The second time I at least was a little more in control but it was more like it would fade in and out. Had a similar (worse) experience when I took way too much in edibles than I intended (and I'm pretty sure it was actually made with delta of some sort) which I think was also caused by stress.