this has happend to me at my first DMT experience. This is now about 3 years back. Loaded ca. 80mg under some ash and plant matter into my bong and hit it. First there were many klicking sound in my head, as if any tension has left nearly instant...then my mind was gone, ego-death...white out.. After some time i dropped back - the first forms and Images appeared and my mind came back. My first thought was: OMG if this stays like this i will never ever need anything more to alter my conciousnes.. xD