Hoax's victim has time for dessert (5,4)
I believe the answer is:
april fool
'hoax's victim' is the definition.
'april fool' can be an answer for 'victim' (April fool is an example). I am unsure of the 'hoax's' bit.
'time for dessert' is the wordplay.
'time' becomes 'april' (I've seen this before).
'for' means one lot of letters go next to another.
'dessert' becomes 'fool' (type of dessert).
'april'+'fool'='APRIL FOOL'
'has' acts as a link.
Can you help me to learn more?
(Other definitions for april fool that I've seen before include "Seasonal victim" , "Victim of hoax in springtime" , "Gowk" , "seasonal jape" , "Victim of practical joke at start of a month" .)