I know yea! - You say this when someone says something and you know they'r

You say this when someone says something and you know they're wrong and you're the only one who's right.

'You said the game was over.' 'I know yea! The final score hasn’t even happened yet!'

'He said he’d stop eating candy.' 'I know yea! He just ate a whole bag!'

'She said she’d pass the test.' 'I know yea! She failed last time!'