Grooming
Grooming is when adults? or older adolescents (teenagers) prepare younger girls and boys for sex crimes? or sexual exploitation?. They do this by forming a close relationship, flattering talk, or sending sexual pictures (of people your age). It's usually men and older boys doing this to younger girls and boys. This can be done over the internet or with people you know in real life.
As I've said elsewhere on this website, good, healthy grown-ups don't form close relationships with strange children.
Children and teenagers, please don't talk to strangers online. And please don't fall for flattery like "you're so beautiful", "you're stunning" or "you're gorgeous" or "you're so mature for your age". These people (predators) do not care about you, they just want to hurt you. Again, there are literally millions of pedophiles?, perverts? and predators on the internet, so if you're a child or teen please don't talk to strangers online.
A predator will also often send you pictures of children having sexual activity with adults. This is done so you begin to think that it's normal for adults and children to have sex (but it's not!). It's done so you can become more willing to have sexual activity with them.