This story from the Jamaica Observer:

'Since [Jamaican rape] law speaks only to women, it eliminates the possibility of a woman being able to rape a man. Notwithstanding this, police sources pointed out that technically, a woman can 'indecently assault' a man or cause him to 'engage in sexual activity without consent'.

Reports from the Centre for Investigation of Sexual Offences and Child Abuse (CISOCA) though, is that to date, there has not been any reported case of 'indecent assault' of a man by a woman.
...
As one female Inspector of Police pointed out, "I know that this [indecent assault] can happen, but maybe the man end up liking it [sexual act], and since he benefitted from it, he doesn't bother to report it.'