Crossword Genius

Surrounded by restless teething child endlessly, I get very angry (3,3,7)

Ross

I believe the answer is:

hit the ceiling

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

'very angry' is the definition.
I can't tell whether this definition defines the answer.

'surrounded by restless teething child endlessly i' is the wordplay.
'surrounded by' is an insertion indicator (I've seen this in other clues).
'restless' indicates an anagram (letters not resting).
'endlessly' means to remove the last letter.
'teething'+'child'='teethingchild'
'teethingchild' with its last letter taken off is 'teethingchil'.
'teethingchil' with letters rearranged gives 'httheceiling'.
'httheceiling' enclosing 'i' is 'HIT THE CEILING'.

'get' is the link.

Can you help me to learn more?

(Other definitions for hit the ceiling that I've seen before include "combust" , "Overzealous pogo dancer might" .)

I've seen this clue in The Independent.
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