What is darno?

Darno; otherwise known as “don’t know” is a slang word that originated from the 6eutiful country of Aotearoa (New Zealand)

You: Fuck g, did you know that Mongrel Monkeys are gay?
Me: G you Darnooo 💀

darno - meme gif

A word yelled when something unfortunate or upsetting, but not unfortunate enough to actually curse.

Darno! I clicked out of the window and now I have to reopen it!" as compared to "DAMN I just dropped a hammer on my toe!