I would think that being on the toilet would be the BEST place to be, since probably everyone on the plane shat in their pants.
My uncle and aunt were on a plane back in the 50s or early 60s that got hit by lightning and a huge fireball went right down the center aisle. This was after a period of turbulence that had people who were not strapped in bouncing off the ceiling.
The pilots got the plane into O'Hare for an emergency landing and everyone ran for the rentacar counters and train stations, my uncle and aunt simply got on the next plane going home. "What's the chance of that happening again?"