Not feeling well - slowing looking through code trying to figure out what is wrong with something - waiting for a 3:00 meeting so I can go home and get some sleep. Also absentmindedly sipping on a 32 oz cup of Diet Mt Dew with one hand while slowly scrolling through the code with the other hand.
WHOOSH - the sound of the cup falling out of my hand, hitting my lap, spraying the keyboard with pop and flooding my lap/chair.
The silver lining from a helpful co-worker. "Hey, at least you drink diet so its probably not as sticky." Yeah... a ray of sun-shine. ;)