Femme Fu

[panton41]

One thing I'll note is that Extreme Sexual Dimorphism isn't so much "She has a nice body" as it is "Those are some of the biggest boobs I've seen in my life." (Or for men it's not so much "well hung" as it "that thing kind of scares me.")
As in cartoonishly extreme. Look up "Polypropylene breast implants" (almost guaranteed to be NSFW, even on Wikipedia) to get an idea of the kind of "Extreme" involved.

It's really meant for such physical sexual characteristics that are large enough to become Distinctive Feature (Exaggerated sexual feature) [-1].