rocky
»She is a bit rocky.»—
»A bit rocky?»—
»Upset, ma’am, excited.» (Miss Hobbs 4. 8.)
A servant.
In this sense the expression is vulgar, whereas, in the sense of broken (by drink, illness, poverty, etc.) or difficult, dubious, it may be considered as verging towards colloquial.
(The term is, of course, derived from the verb rock.)