An Earth tremor at around 22.17 hrs last night.It almost rocked me out of my settee.

...Which tremor...and these days they don't move unless you bite their foreheads!!!!

A tremor is an involuntary, somewhat rhythmic, muscle contraction and relaxation involving to and fro movements (oscillations or twitching) of one or more body parts. It is the most common of all involuntary movements and can affect the hands, arms, eyes, face, head, vocal folds, trunk, and legs.