As you run, suddenly, you fall. You don't trip, as a vampire you're above such clumsy mistakes performed by humans. Instead, it's like the floor simply falls away to nothing, some form of massive trap door. However, the odd part of this is that the falling doesn't end. A well known phenomenon of falling is the landing part, which is often quite painful, and you've been falling for quite a while now without landing. In fact, it's nearly impossible to tell you've been falling. Thinking back, you can't think of a time you weren't falling. The more you think about it, the longer it's been. Years, maybe. Perhaps you've been here your entire life, simply falling, for all of eternity, an abyss of pure blackness the only thing in existence, a monotone existence that has somehow failed to drive you insane. An infinity of monotone blackness, encompassing all that has ever existed, stretching back to the dawn of reality itself, perhaps even older than that.
Then, you see a form. A being that had always been, and always will be. The being is not there, not just floating among the blackness, for it IS the blackness, the infinity. Within the form of this being you can see everything, and yet nothing, all you wished for and all you fear, a being of infinite possibilities, the very representation of reality, something beyond mere human understanding. In this one moment, a moment that is both infinitely short, and lasts forever, you see this being before you, and you know you are looking at time itself, the very concept of the flow of time, manifest into a single being, the representation of infinite possibility, the constant throughout all of reality, which exists in everything. And it's pissed.