i think it might be those spikey things...especially that one coming out of the shield ... now that's getting pretty close to porn, imo.....but wait !!! you say they can see nipples????  There's a better chance of seeing one down by her knees than on her boobs.... at least there isn't any clothes covering that area.
They'll be seeing boobs on rocks pretty soon...make sure you cover all rocks with moss or something similar.
And probably see boobs in cloud formations...only blue clear skys from now on.

Give me a frickin break, already

Humankind has not woven the web of life. We are but one thread within it.
Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854