Uho -> sound monkeys make.

no thats "uki"

Whatever the hell it means doesn't really matter haha. Sakura seems to be enjoying what she is seeing/reading very much so ^.^

Hmm, there is an image of a penis on the cover. That's kind of a hint towards the contents.

"On Japanese forums and imageboards, as well as in homosexual circles, the interjection "uho!" ... is often taken in a homoerotic context"
http://en.wikipedia.org/wiki/Kuso_Miso_Technique

Well...the manga did highlight that she is a bit of a pervert. So this pic is for all purposes canon.