What is Nolahno?
1.
A sarcastic expression to answer a question when the answer is definitely a 'yes'.
It originates from Scandinavia where the Vikings used to make a unintelligible "nogrhfpoeusdnwxvno" whenever asked a very stupid and obvious question. It has been adapted to the modern Singaporean context by changing the "grhfpoeusdnwxv" to a more popular "lah".
Girl: Are you a boy?
Boy: Nolahno!
See