...how a perfectly good ride gets spoiled. Sorry, it's Friday, time for an utterly pointless thread about nothing of any importance at all. Flats and mechanical failures are obvious, but what are those random occurrences that can really spoil a good ride?
For example, dogs, drunks, freak electrical storms that rearrange the neurons in your brain giving you extra sensory perception, which is really fun at first, but ends up becoming a soul crushing burden as you drink yourself into oblivion in a vain attempt to wipe out visions of yet another washed up celebrity getting their own reality show. "Luke and the Duke", in which Luke Perry and the decrepit remains of John Wayne shack up together with a bunch of sorority girls in a one room apartment. Who will be the first to go?

Please share your stories.