When I was born my dad took one look at me and said her head looks like a coconut; so, of course, I was "Coconut Head". My middle name is Ann and by the time I was a preschooler my dad was calling me "Raggedy Ann" after a favorite doll. By the time I was in high school and had sprained my ankle 7 or 8 times (which was eventually 13 sprains, two breaks and an ankle reconstruction)my dad would just shake his head over a new injury and say, "I should have named her Grace!"
My dad used to introduce his brother like this, "This is my brother, Bill. We call him "Washinging Machine Bill" 'cuz he's such an agitator.