Yes, I was forcefully sucked out of my body when the grey aliens pulled me over and that has been the only time. Other times have been like that:
90% of times - I lie in the bed, waiting to either fall asleep or go astral and then I suddenly start to feel as if I was floating and realize that I'm now in the astral reality. The transition here is very smooth, like instead of falling asleep and losing your consciousness you suddenly discover yourself in the astral world as if you have taken a drug and been waiting for it to kick in until it happens.
6% of times - I was previously sleeping and normal dreaming but instead of waking up in my physical body I wake up next to my physical body in my room, realizing that I have transitioned myself from a normal dream world to the astral reality. I remember a specific time that was very scary: I was dreaming that I was at a shore of an ocean and then a humongous end-of-the-world-size wave came and it swallowed me like a little ant, I felt the salty ocean water in my mouth and lungs and thought "that's the moment, I'm going to die and there's nothing I can do about it." It made me very rebellious and I felt as if I refused to die. The latter made me wake up near my sleeping physical body in my exact room. I was scared shitless that I might have died during a sleep and now I'm seeing my dead body, being a spirit. I got super scared and tried my best to wake up by very strongly intending it - I managed to wake up in my physical body and was super happy to be alive
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4% of times - I become conscious in the middle of a normal dream, not waking up near my physical body, but knowing that it's the astral realm, except a much higher layer (farther from the physical reality). One may argue that I'm just experiencing lucid dreaming in these cases but I'd say there's a slight difference.
By now I can say that I have encountered succubi in my dreams too. This one time I was taking a bath with some woman whose face I wasn't able to see but she was naked. Then I used my free will to allow her to come to have sex with me. She did but it was not sex that she started doing. She was shaking electrically fast as if you would fast forward a porn movie and I felt as if my heart would stop if she continued, not pleasurable at all. I pushed her away, and this was a conscious decision although I wasn't aware that I was sleeping. Then I woke up. Some crazy shit happens in the dream world. Lately I was able to have a dialogue with some entity in my room - it had the exact voice of my father - and it talked very friendlily to me that if I say to my astral twin that he's ugly, it would turn me beautiful and if I told him that he's beautiful, it would turn me ugly. My astral twin that moment was like another me whose 3-dimensional image I was observing while having the dialogue with the entity that had my father's voice.
For a record, I haven't taken external DMT into my system since the December and I strangely no longer feel that I ever want to do it again. My past DMT trips were so intense, so utterly alien and disturbing that I wished I hadn't taken DMT at all and promised myself to never do it again if only it would deliver me back to my everyday world, safe and sound. The feeling I got was like a near death experience or something, making me realize how much I love my everyday reality and that I cannot risk losing it. The saying that "you will always come back, don't worry" becomes bullshit if you consider this scenario:
1. you don't come back, but instead go somewhere else
2. something else comes back instead of you
This theory cannot be pushed over because it's like death, you can't come back to talk about it. I might experiment with DMT in the future when I feel as if I could take the risk of not coming back, but right now I have more important/interesting things to do in this everyday reality.