Bob for example upsets Rhoda with one (6)
I believe the answer is:
hairdo
'bob for example' is the definition.
(bob is a type of hairdo)
'upsets rhoda with one' is the wordplay.
'upsets' is an anagram indicator.
'with' indicates putting letters inside.
'one' becomes 'I' (Roman numeral).
'rhoda' with letters rearranged gives 'hardo'.
'hardo' placed around 'i' is 'HAIRDO'.
(Other definitions for hairdo that I've seen before include "Bob, perm or bouffant" , "What one may have expected from 'Sweeney Todd'" , "Possibly a DA" , "capital arrangement" , "Coiffure (colloq.)" .)