a "yoldie" young person who identify themselves as older and more mature and prefer to stay home on a Saturday night and watch Netflix rather then party, ages: 20-30
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.