> I wonder about this bit though - I wasn't sure if I really had gone out that quickly, or if I talked for more time but just don't remember it.

Something about the sensation of returning felt like it was on the waking side of the experience, rather than the falling asleep side.

And because I did it twice I did see that the doctor had practiced it, it wasn't just smalltalk. He got me to do a biographical spiel because you tend to have one (grew up there, moved for uni, blah blah) ready. So when it came time to give it, I sort of vanished while talking about myself. No slurred speech like I was drunk, just sort of "oh shit I'm falling asleep" after maybe a couple of sentences, and then gone.

I can see why Michael Jackson might have liked it. It really does KO you super fast.