I remember it vividly. I was standing on the edge of my toilet hanging a clock, the porcelain was wet, I slipped, hit my head on the edge of the sink. And when I came to, I had a revelation, a picture, a picture in my head. A picture of this (points to Flux Capacitor). This is what makes time travel possible. The Flux Capacitor. 

(via lulubonanza)