I don't know nan molla - An ARMY is so confused they just scream 'I don't know nan mo

An ARMY is so confused they just scream 'I don't know nan molla' like it's a battle cry. It's from BTS, and it's so annoying it should be illegal.

'Why are you screaming?' 'I don't know nan molla!'

I used 'I don't know nan molla' in my essay and got a C.

I told my brother 'I don't know nan molla' and he cried.