I thought so. - A braggy remark that means you’re not just smart, but also a

A braggy remark that means you’re not just smart, but also a bit of a jerk.

'I thought so.' said after the friend failed the quiz again.

'I thought so.' said when the neighbor’s dog dug up the garden.

'I thought so.' said during a game show when the other contestant got the question wrong.