A fork of Rural Dictionary
A ning-nong, frequently abbreviated to nong, is someone who has done something stupid or clumsy and has caused a nuisance to others. Although it is can be an insult, it is often used affectionately, especially by Australians.
"Ah Charlie, you're such a ning-nong!" (in reply to a deliberately weak joke.)
Why did you go and invite that ning-nong to our barbecue? He's embarrassing all our guests!
"Stop being such a ning-nong, will you? You're upsetting your sister!
someone who has stuffed up
geesh your such a ning-nong bruce for sticking you head in the fire