There are two differing forms of the cankle
1: Where the ankle is large enough that it is unable to be distinquished from the calf.
2: Where the calf is slender enough that it is unable to be distinguished from the ankle.
1: Man, How could you hook up with Mandy? That bitch is so large that she's got cankles.
2: Of the two types of cankles, kenyan marathoners have the latter.