(1) In this part:
"aggravated offence", for an offence involving family violence—see section 72AA (2).
"sexual intercourse" means—
(a) the penetration, to any extent, of the genitalia or anus of a person by any part of the body of another person, except if that penetration is carried out for a proper medical purpose or is otherwise authorised by law; or
(b) the penetration, to any extent, of the genitalia or anus of a person by an object, being penetration carried out by another person, except if that penetration is carried out for a proper medical purpose or is otherwise authorised by law; or
(c) the introduction of any part of the penis of a person into the mouth of another person; or
(d) fellatio; or
(e) cunnilingus; or
(f) the continuation of sexual intercourse as defined in paragraph (a), (b), (c), (d) or (e).
(2) In this section:
"genitalia "includes surgically constructed or altered genitalia.
"object" includes an animal.