The situation I was thinking about, and was wanting to see if others put it together, is two people both drunk engaging in sex. A common cry is that having sex with a woman while she is drunk is rape, because she is unable to consent. That is to say, despite any words she might say, any consent would be invalid, as she would not be able to make proper judgement, similar to how a child cannot not validly consent due to inexperience. So logically, anyone having sex with a man while he is drunk, is also committing rape, as he too cannot consent. Furthering that logic, two drunk people, of any gender combination, could neither one consent and thus both are raping the other while being raped by the other.