Im 15 and I have cankles?

Im 15, Im in good shape, i skate a shitload, i eat okay, but i have cankles. im 125 pounds i used to be 150 and i lost alot of weight. but that did get rid of my ******* cankles. i have no idea why i have cankles. its extremely embarassing so is there any other way i can get rid of them