Mine sucked today. It all started last night when I realized BOTH of sets of brake pads were down to the metal (a huge flatbed truck nearly cutting me off convinced me it was time to change em').
Stupid me. I forgot to change them last night, and I was already running late. It took me HALF AN HOUR to do it, and I only did the fronts.

I am never buying a bike with threaded-style canti brakes again. Thankfully my boss (being a cyclist himself) was pretty cool about it when I called.
Then, as I reach down to grab my bag I see there's cat puke all over it. By the time I de-cat-puked my bag, de-greased my hands, and finally slogged to work I was almost an hour late.