It was a day of surprises.
For the matter beneath his feet to commence shaking was a surprise because it had shown no prior predilection so to do and hence had come to be regarded as stable.
Given the ‘most stable’s’ new propensity, somewhat less of a surprise but still, unthinkable, his previously stable walls also began to shake.
The third surprise came hot on the heels of the other two.
As the usually reliable roof-tiles cascaded around his head, he realised that a shock-wave could be seen with the naked eye.
It was the last thing he saw.