Fuckin ell, very very hard to describe, you'll know it once you've tried it, the visual aspect has its own character, nothing like any other psych IMO, from the very first inhale the world around you is transformed, sparkles , glints, highlights, the world is a world of shifting mosaics, sequins, your hands, the pipe or whatever you're using, all is almost unrecognisable....part of you thinks that's it and you sort of want to stop....
But you know you need to go on and have another fucking great huff! I usually manage a 50-60mg dose in 2 huffs, that 2nd huff, hold it in deep and the visuals become something solid and tangible, the DMT sounds start chatering in your head, and you know you got to get the smoking device down somewhere and lie the fuck back quick.....but it can be hard to recognise what is what, my bed, what is it, what's going on? There's something stood in front of me, sometimes friendly sometimes mischeivous, sometimes downright malevolent looking, and he's waiting for me to fully open up and let him and his friends in, sometimes he literally pulls a crowbar out and levers me head open, other times i'll just collapse and go with him...
And then it starts to get wierd
Hahaha, there's so many different ways it can go, I wouldn't like to precolour your experiences, i think you need to approach it with an open mind, don't read too much McKenna etc, or you WILL find yourself using his descriptors to try to make sense of what you're seeing, being shown, experiencing.....
I honestly never thought I'd find a psychedelic so perfect.
EDIT>>>>>>>>other than the fact it is a psychedelic, it's hardly similar in any way to shrooms/acid/MDA, it totally pisses on all these drugs, BUT, I wouldn't think it's something you can function on, I used to love going out dancing on shrooms, acid or MDA, but no way could you manage this on DMT