Some believe that sexual activity is reserved for early and middle adulthood. Teens often feel that adults are too old for sexual intercourse. Sexuality, though, is much more than sexual intercourse and humans are sexual beings throughout life. Children are sexual even before birth.
Males can have erections while still in the uterus, and some boys are born with an erection.
Infants touch and rub their genitals because it provides pleasure. Little boys and girls can experience orgasm from masturbation although boys will not ejaculate until puberty. By about age two, children know their own gender. They are aware of differences in the genitals of males and females and in how males and females urinate. Sexuality in children ages three to seven Preschool children are interested in everything about their world, including sexuality.