to create an online identity so far removed from reality that it results in actual mental instability, named for Internet pseudo-legend Riddick51PB who seemed to believe that online gaming made him a famous "athlete"
"That guy really thinks that because he play World of Warcraft that he can charge into a bar and fight everyone. He must be riddicking"
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.