A slightly playful and informal response to statements your friends might make to politely communicate the scarceness of shit given. It is often a more appropriate response to minor things that does not merit a sincere “nice!”
Example 1:
Your frd: “I just went to see avengers, it’s the best movie everrr”
This does not sound sincere. And your friend will likely block you and never talk to you again which might be a good thing in this instance.
Example 2:
Your frd: “I just went to see avengers, it’s the best movie everrr”
You: “noice!”
We can immediate feel the difference here in tone, in this case if you do not probe any further, your friend will likely understand that you do not give a shit and will likely leave you on read but will not block you which in general is a good thing as you can always initiate the blocking.