1 definition by Adriel Kelsick
A complimentary word used to describe someone who is both hot and cool. You have the dude with a great personality, but average looks, and the chick who's sexy, but a bubblehead, and then you have someone who is 'pi' -- the best of both worlds. Stands for "Physically Impossible", since, technically speaking, nothing can be both hot and cool simultaneously.
by Adriel Kelsick April 26, 2007