The realisation of the grandness of being something rather than nothing, being in awe of the mystery of everything.
The joy of being, at last, an active participant in the journey (trip) of your own life is expressed by speaking in a foreign tongue of unknown origin, each sound creating pure natural ecstasy as it flows from you, driving you to continue this act while dancing and smoking a cigarette. As this goes on, you can feel that everything is about to end, the beautiful fairy-tale that the universe is is reaching its peak, you are channelling the energy of the universe through your bodily filter with the help of the plant, synchronicities unveil themselves and you feel yourself becoming whole, the inner child, the anima, everything becomes the one self.
Over all its indescribable, but it is very fun to try.
After this is over I tend to sit down and feel by whole body strive with some primal vigour and want to hug the world.