I mean, I'm a guy, and I do notice breasts. I will not normally talk about it, but I do that. So for me it's just a detail that adds to the character. Also Stephen King mentions a whole lot of gross details like that, that's the point of his writing. For me personally, it's something along the lines of saying openly what everyone's thinking. Like, I know this subject is gross, but it affects my life, and I like that someone was able to discuss a similar experience.