"Filatio" is not a widely recognized term in English or any specific field. It may be a misspelling or a variation of "fellatio," which refers to oral stimulation of the male genitalia. If you meant something else or a different context, please provide more details for a more accurate answer.
Fellatio is oral sex on a male.
First, grab it and turn it like a doorknob. Then slap it back and forth between your hands. Make sure you do not try and bedazzle it and penazzil it with rhinestones! Tongue piercing are not optionals, they're necessary!