Dear Nell,
You are doing the
correctCorrect (new formula) thing to set limits on such behavior. Do not permit it, even for a moment.
It really is not the expected kind of behavior for a child of your son's age. It indicates that he might be over-stimulated in some fashion. Think of how he might be influenced to behave this way. Sometimes children are exposed to the
sexualCauses of sexual dysfunction
Erection problems
Female sexual dysfunction
Sexual problems overview behavior of adults or older siblings, sometimes they view movies which are inappropriate for them etc. Try to limit his exposure to behavior that he should not be experiencing, if you can discern anything.