Naff all - Nothing, but with a side of disrespect. Like a zero that got

Nothing, but with a side of disrespect. Like a zero that got kicked out of the class.

"I did naff all on this test. I might as well have slept through it.", A kid who failed math.

"Naff all? I’ve had more action in my dreams.", A kid who got no attention from his crush.

"I did naff all today. I might as well have been dead.", A kid who didn’t do any work during the whole day.