No, they teach that when kids are hitting puberty. And it’s not about ‘sticking things up their pussies’ . Stop using that ignorant language, you sound really stupid. Also, look up some info for God’s sake, cause toddlers masturbate, and if you have kids, you will do a really awful job teaching them about healthy sexuality. Literally use google.

 https://www.webmd.com/sex-relationships/guide/masturbation-guide