Sometimes things just seem to go perfectly wrong. The preparation is great, the lead-in is promising, but something critical falls through, and all is for naught.
This morning: I made myself the most perfect large cup of coffee to offset my 8:00 am biostatistics class. I even added extra cream to make it taste super-luxurious. I was stopped at the red light where I usually crave my first sip of caffeinated beverage. There was a moment of disorientation as I found nothing in the cup holder, supplanted by utter dismay as I realized I had left my red Fiber Fest '09 mug standing conveniently on the table about 6 inches from the door knob so I could not possibly leave it behind. This was the moment of truth. I was half-way through some particularly stirring profanity when I decided this would be a funny story. I would tell someone, she would commiserate and laugh, and I would just slog though class and spoil myself with something extravagant later. (Nevermind how this sounds like rewarding stupidity with an expensive treat.)
Somehow I made it through 75 minutes of hypothesis testing, Z tests, and t tests, staggered up to my lab, dropped all my stuff, and went straight to the coffee kiosk down in the atrium where I spent $4 on a pumpkin spiced latte to alleviate my morning's failure, and rescue me from violent yawning.