The perils of bike commuting are without number. Inattentive, aggressive, impaired, incompetent drivers ought to be enough to worry about. Or that occasional jogger who does a button hook into your path. Or even the little kid or dog or squirrel who darts out into your path. These are all minor problems compared to the dreaded pile of poo! Nobody expects the pile of poo. Then it appears. And you hope you have quick enough reflexes to avoid it. Otherwise, the dreaded pile of poo might leave a bad taste in your mouth - especially if you're riding a recumbent and are low to the ground.