An extremely long and complicated term used when constipated, or if your feces is giving you a hard time. It can be difficult to remember, but for those who memorize it, the benefits are never-ending.
Someone or something that bites your ankles.
To a postman, an ankle biter is often known as a dog.
To an adult, an ankle biter may be a toddler.
To hikers, an ankle biter is sometimes a tick.
And so on.