Obliviocity
To disappear from view at a speed that is un-noticeable. Watching an object that is receding into the distance at such a speed that you do not realise it is no longer there...
Staring at another person while on a heavy acid trip. The light around them fractures to the point where the dancing aurora meld into a kaleidoscopic hallucination and the subject slides into obliviocity.