Crossword Genius

Break down joke at university (7)

Ross

I believe the answer is:

crackup

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

'break down' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'joke at university' is the wordplay.
'joke' becomes 'crack' (a crack is a joke or quip).
'at university' becomes 'up' (to 'come up' is to arrive for term, e.g. at Oxford).
'crack'+'up'='CRACKUP'

Can you help me to learn more?

I've seen this clue in The Daily Express.
Want a hint initially instead of a full solution? Install my app