O BLAARGAGG!?!
When you're so confused you just scream 'O BLAARGAGG?!?,' then throw your shoes at the wall.
Friend: 'What's 2 + 2?' Me: 'O BLAARGAGG?!?'
Math teacher: 'What's the answer?' Me: 'O BLAARGAGG?!?'
Sister: 'Why are you crying?' Me: 'O BLAARGAGG?!?'