Seems like the breast clouds were gone for a few hours and replaced with a picture of a starry sky with a comet... well, the clouds are back now. I agree with Carolyn that they make the sky seem to hang so low that you could touch it. Of course I agree with Gr8shadesofelvis, too, that they look like bum cheeks more than breasts, since they are missing the natural "center point" of a breast. But hey, they are called "mammatus clouds", breast clouds, not... whatever "bum cheek clouds" would be in Latin!
And Hasini, I think I know what you mean, too. This is a statue of Athena, the Greek godess:
Athena is covered in what I take to be offerings, among them round male organs that you cut off when you turn a bull into an ox... if you know what I mean.
I can imagine what the Latin name for that kind of clouds would be, but don't expect me to spell it out in this G-rated folder!
Ann