The sterile porcelain tiles glistened on the wall under the fluorescent lights. Scents of bleach and chlorine filled my nostrils.
I burst into the cubicle busting to use the loo.
Suddenly the floor shifted to the left ever so slightly.

How peculiar?

Finished I was nearly decent when the grid of tiles moved again, this time more vigorously.
It moved in the opposite direction and the frame of the cubicle arched.

I had to get out.

The door moved back to its 'vertical' position, and then bowed the other way.

Pause. Stop.

Run. I hurriedly washed my hands. Why?