By virtue of the existing laws relating to sexual offences, the suspect would only be liable for indecent assault and unfortunately, not liable for rape.
See Section 353 of the Criminal Code Act, Cap.C38 LFN, 2004 and Section 285 of the Penal Code.
EDITORIAL: It appears right for us to here suggest that the law should be further amended for there to be an unlawful carnal knowledge of any person without his or her consent, and some better description be given of what should constitute rape of a male person by a female. This will even make the contribution of the VAPP Act more complete because the reference to penetration by a woman with any part of her body or anything, in the case of a woman having an unlawful carnal knowledge of a man, without his consent, somewhat appears inappropriate, imprecise, vague or just not fitting into what we know of a woman raping a man. In a situation where a man is made to sleep with a woman by force or threat of harm to him or his close relation, or by some means, made to be unconscious of his actions, and in that state taken sexual advantage of by a woman, the man should be held to have been raped