WHO guidelines for sex education recommend that children aged 0-4 be taught about "masturbation" and "gender identity."
The World Health Organization's 'Standards for Sexuality Education in Europe: A framework for policymakers, educational and health authorities and specialists', advises children be taught about sexually pleasuring themselves and transgenderism before they've even fully learned to talk.
The WHO advises that children aged 0-4 are given "information about enjoyment and pleasure when touching one's body… masturbation."
Toddlers are also to be encouraged to "gain an awareness of gender identity" and given "the right to explore gender identities."
In the ages 4-6 bracket, educators are urged to "give information about same-sex relationships" and "help children develop respect for different norms regarding sexuality."