a. Sexual Intercourse
To amount to rape, there must be penetration of the vagina by the penis. This is why, in Hong Kong, rape can only be committed by a male upon a female. The slightest penetration is enough and completion of the intercourse by the ejaculation of semen is not required. Penetration is a question of fact in each case. Penile penetration of a part of the victim's body other than the vagina, such as the mouth or anus, does not amount to rape, nor does penetration of the vagina by an object or a part of the body other than a penis.