la la world
the nonsense your math teacher uses when you're being dumb or when you're too lazy to even try
He said 'LA LA WORLD' after I told him the answer was 'like, obviously 4000' when it was 400.
'LA LA WORLD' came out of his mouth when I stared at the problem like it was a monster.
I was called 'LA LA WORLD' when I said 2 + 2 was 5 because I was high.