word used to describe anything that is bad, crappy, shitty, horrible, or old people who don't know what they are doing. commonly used around the people who are being talked about, so that they do not realize that they are speaking about them.
SEB: "Hey, how did that coupletip you on their bill?"
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.