Telephone about a viceroy's teasing (7)

I believe the answer is:

ragging

I'm a little stuck... Click here to teach me more about this clue!

'teasing' is the definition.
('rag' can be a synonym of 'tease')

'telephone about a viceroy's' is the wordplay.
'telephone' becomes 'ring' (synonyms).
'about' indicates putting letters inside.
'viceroy's' becomes 'gg' (I can't explain this - if you can you should believe this answer much more).
'a'+'gg'='agg'
'ring' placed around 'agg' is 'RAGGING'.

Can you help me to learn more?

(Another definition for ragging that I've seen is " Teasing, joshing".)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.