It's not a profound story or anything. My mom and her sister had children 4 months apart. Me first and then my cousin. So we were together a lot and she couldn't say my name right. It always came out "krackle" instead of krystle. And it stuck, my dad still calls me krackle and my grandma called me that until the day she died. Some of my friends know the story and they use it too. Oddly enough, my cousin who started it all never calls me that anymore ha. So, Krackle is my nickname.
Intriguing story...i know haha.