Definitions by clickclackivansback

FNO 

For Nerds Only

Originating from M.M. herself at a private all girls school in Sydney, Australia.

Is used wisely across the year 12 community. Mostly as an insult. If you don’t know what FNO means, you probably are one.

Miah aced that business studies test, what an FNO moment.

FNO by clickclackivansback September 20, 2019