"Why does she have fat Muscles???

Izze and I have been going to the pool a lot this summer. Izze is loving the water. She met a friend at the pool last week and had to share what he said. The boys name was Nick and he was 4 years old and had a lot of questions for us. He also didn't get that fact that she was a girl...he had 3 brothers. Here are all the questions...
"Why does he wear that swim suit?" "Why does he wear those glasses?" "Why does he play with those toys?" But the best one was... "Why does he have fat muscles?" See the picture and you will see what he was talking about. I was laughing so hard. She does have fat muscles. She is definitly getting enough to eat.