earthquake

There was an earthquake last night.

A 5.2 on the Richter scale.

I vaguely woke up, roused to semi-consciousness, and quickly returned to sleep after wondering what my housemates were up to in our basement.

That is co-op life: you get awakened by an earthquake but fall back asleep in a split second, comforted by the assumption that other coopers are simply conducting a morning activity.