When you're helping (step)mom in kitchen, you have option to lift her skirt, if you can't it's crossed over, and you have, it says "not enough corruption" (or something like that), but what triggers it high Arousal.
Not sure if Corruption has anything to do with it, since I've got it to 100 on MC, and nothing was happening, not sure if you can even get Corruption higher currently, but I don't think I've done everything in the building either...
So basically, I'm not sure if it's supposed to work on both, high Arousal and higher Corruption, or just on Arousal, and massage is wrong.