At a very young age, children begin to explore their bodies by touching, poking, pulling, and rubbing their body parts, including their genitals. As children grow older, they will need guidance in learning about these body parts and their functions. When these behaviors happen, try to redirect your child's attention to more appropriate behavior by saying something such as, "Grown-ups do that in private, and you should, too. Parents also need to know when a child's sexual behavior appears more than harmless curiosity. Sexual behavior problems may pose a risk to the safety and well-being your child and other children and can signal physical or sexual abuse or exposure to sexual activity.
Children Without Clothes: When Do They Need a Fig Leaf? - The New York Times
First of all, toddlers touching themselves is absolutely normal, whether they are naked or not. In fact, research has shown that babies begin such touching while still in the womb. But it sounds like your real question is how to teach a two-year-old that while touching herself is normal and healthy, she should do so in private. Privacy is a difficult concept for any toddler to comprehend, and you should not expect them to understand it until they are between four and six years old.
Kids exploring each other's bodies: What's normal?
Alexandra Carlton November 03, Sometimes, kids' games head into the nude-and-rude territory. What's normal and safe and what's not? We thought it was hysterically funny - though we also had a vague notion that it was a bit naughty and rue. Er, rude.
After school, he likes to take off his pants, recline on his stuffed animal chair and watch an episode of SpongeBob SquarePants while snacking on cheese-flavored crackers. Nicola, 44, said affectionately. Alex asked his sister and her friend to paint his fingernails and then suggested a fleshier canvas. Put nail polish on my bottom! Nicola said.