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 think it’s Sunday?' 'I know yea! It’s still Thursday!'

'He said he’d stop talking.' 'I know yea! He just yelled at the dog!'

'She said she’d stop eating ice cream.' 'I know yea! She just ate a whole pint!'