when sitting in a chair at the computer for a long time...WORD OF CAUTION!!!

random thought from sheer experience. A word of caution to those who enjoy sitting at the computer for a long time. Sometimes your ass chooses to fall asleep out of the blue. And then it is hard to get comfy again without announcing that your ass has fallen asleep. Don't try to wake it up, either. It won't listen.
~TsUmI~

...her ass just fell asleep.