=Irrumare=: Penem in os alienum inserere, ut sugatur, itaque
voluptas quaedam libidinosa paretur; to put the penis into another’s
mouth to be sucked—a form of vicious indulgence.
=Fellare=: Penem alienum in os admittere, ibique eo sugere ut
voluptas quaedam libidinosa paretur; to allow another’s penis to be
put in the mouth and to suck it—the active form of the above vicious
practice.
=Fellator=: Is qui pro habitudine fellat; one who practices this
vice.
=Cunnilingus=: Qui mulierum pudenda lingit; a man who licks
women’s private parts.