Could you let the uninformed know the “rest of the story” ?
There’s really no “rest of the story”. She just explained that women are as aware those two things are hanging out there as a man is aware of that thing between his legs, and when a woman brushes them up against you, it’s like a man brushing his crotch aganst a woman’s butt. ‘Course different people do it for different reasons, and the more well endowed they are, the more likely they are to do it, if the source motivation is there. We all work with what we got.
Sometimes it truly is unintentional, but that is mostly a “packed subway” thing.