There are some days when you sit down at the computer knowing that you have at least three major work tasks which really do have to be done today, but your brain was trying to plot a new piece of dystopian SF smut in the shower and it really would like to go do that instead, and also you have a headache from coughing because the headcold or dramatic allergy attack from last weekend (whichever it was) still has some lingering bits, possibly because ragweed has been off the charts for going on two weeks now, and on the whole your physical condition is not superb at the moment, but your brain is awake and functional and resents having to function in a direction it doesn't want.

The preceding run-on sentence has been wholly intentional.