^ That picture makes me giggle all the time.
She's smiling, all pretty, and then there's the ring with a vulgar word on it.
But yes, the answer's pretty much been answered. Aside from the possible translation from
ittai to "what the hell/what on Earth," Ayumi doesn't seem to curse in her everyday speaking.
(I even asked this question a long time ago and received the same answer: no, Ayumi does not curse.
)
(^ Ooh, I'm not saying, "There's already a topic! Go search for it next time!" I'm just stating my knowledge because of the thread I made long ago.
)