Q I have two children. My older boy is four and the younger one is two. My younger boy loves touching my feet, or rubbing them, with his own feet. I don't mind him doing this, but he does it to his older brother too, who doesn't like it. I need to know is this normal behaviour or not? I'm worried about him.
Children engaging in sensory comfort-seeking, using touch, isn't unusual. Lots of children like to suck their thumbs, or they have a favoured toy or fabric that they might touch or hold to comfort and soothe themselves.
Perhaps the fact that your son's preference is to touch feet with his feet may be less typical, but the reason he does it is likely to be for the same comfort-seeking reasons.
If it isn't a problem for you then there is no need to encourage him to stop touching your feet. You might, however, have to set limits such as teaching him that he needs to ask for, and receive, permission to touch someone's feet or that he may only do this at home.
Once he understands that he has to ask to touch someone's feet, you may also have to teach him that it is okay for his brother to say "no" and he must respect and accept that.
Since he is only two, the best way to teach this is through repeatedly interrupting him if he touches his brother's feet, lifting him away, while telling him that his brother doesn't want that. At that point you could simply distract him to something fun that he can do instead.