Unseen Academicals - Terry Pratchett
When he turned around, Madame, in a nightshirt that could have accomodated a platoon, at least if they were very friendly, was bearing down on him with a glass in one hand and the champagne bottle in the other.
"This stuff's gone horribly flat," she said.
Moral: If the clacks are so engrossing you are whizzing in cups, don't use the same style cup for your Mountain Dew.
On the bright side, you'll know if you're diabetic...
Procrastination: Forward planning to insure there is something to do tomorrow.