Your housemates behavior is stupid, abhorrent, morally and mentally deficient. Arguably while sober its possible that both parties in full possession of their

Your housemates behavior is stupid, abhorrent, morally and mentally deficient. Arguably while sober its possible that both parties in full possession of their faculties may have made the choice to have drunk sex with someone only actuated when they both sloppy drunk met the ultimate person they were going to get busy with. The problem is that the answer is indeterminate. If someone absolutely intended to get busy it argues against them being the victim by virtue of having made as you've said the decision to take such action while sober however its absolutely possible for them to rape another who didn't make such a decision while drunk number one are themselves are too impaired to judge the situation and its also possible for someone else to believe they were getting over on an impaired partner. That is someone, drunk number two, can morally but not legally be guilty of rape because it was their intent to get someone drunk to impair their judgement to allow them to sleep with them. This is something like driving a little drunk and arguing whether or not someone murdered someone by driving impaired. It can be legitimately difficult to tease out moral culpability in edge cases. For example its entirely possible for the drunk driver to be blameless in a crash caused by the incompetent actions of a sober driver, for example running a red light. Most situations are less ambiguous and the the solution to such ambiguity is to simply not drive drunk or use alcohol to lubricate sexual conquests. There is a degree in moral insanity in a substantial portion of the population not understanding how to deal with such a simple situation.