(1)  In this Code –

sexual intercourse means –

(a) the penetration, to the least degree, of a person's vagina, genitalia, anus or mouth by a penis; or

(b) the penetration, to the least degree, of a person's vagina, genitalia or anus by a body part of a person other than a penis; or

(c) the penetration, to the least degree, of a person's vagina, genitalia or anus by an object held or manipulated by, or attached to, another person; or

(d) the continuation of an act of penetration referred to in paragraph (a), (b) or (c) of this definition.

(2)  In this section –

penetration does not include penetration carried out for a proper medical purpose, for the purposes of hygiene or for any purpose that is authorised by law.