^If you want to never forget something, picture an absurd
   relationship between the two things. Violence, taboo thoughts,
   blood, ridiculousness - all are things that can help. For
   example, if you are always losing your pen, next time you put it
   down, just as it lands, imagine it being stabbed through the
   surface of the desk with blood spurting out of the desk as it
   screams in pain.

   Trust me: You'll REMEMBER where you left your pen.^