Wiktionary
num-num
n. (context childish English) Tasty food.
Usage examples of "num-num".
They settled on a num-num bush, and snatched a drupelet each, throwing it up into the air and catching it in the back of their throats.
The num-nums were covered in shiny purple-ripe drupelets, clustering in groups of two and three, even four and five.
The num-num season num-num time is a time of plenty in the forest for, in February, at the height of the rainy season, the prickly pears ripened, the wild plums lost their biting acidity as they too ripened, and the marulas were heavy with thousands of fruits that would drop in March.