She described penile erection, ejaculation, ejaculate, and ejaculate's taste. Her uncommon mastery of sexual stimulation's physical effects placed her understanding of fellatio beyond question. Thankfully, small voices rarely speak of such things. When they do, their message visits our senses with unparalleled persuasive force. The reason is simple.
Society protects children from exposure to worldly matters.
Society's norm anticipates sexual innocence. Children should be incapable of describing such things. It shocks the senses to hear a little girl speak about fellatio. Such age-inappropriate knowledge compels an inference of child sexual abuse. Common sense shuns any other explanation.