Stephen has made a mistake. The syllables are trochees (stressed syllable, unstressed syllable), not iambs (unstressed syllable, stressed syllable, made famous by Shakespearean verse). Despite his intellectualism, Stephen DOES make mistakes
called you naughty darling because I do not like that other world
Text:
Bloom quoting Martha's letter from earlier. Note the misspelling of "word" as "world" - whoever Martha is, she is not a very good typist, even though she responded to Bloom's ad in the hopes of employment as one