combination of
the word Fillatio meaning the
oral stimluation of the male genitals/penis/dick and the
italian word, adagio meaning slowly or at ease.
So the combination created Filagio, a slow, easy stimulation of the penis.
Steph: "I gave him filagio"
Lewis: "WTF that ?
Steph: "I Slowly sucked that guys dick"
Lewis: Oh nooooo not that
ugly fucka, why would you give him head .... *repeated facepalm*