I know you. - A way to say you're not scared of their insults and you're g

A way to say you're not scared of their insults and you're going to mock them back.

I know you. You're the one who said 'fuck you' and then cried when I said 'you're a crybaby.'

I know you. You're the one who threatened me and then ran away when I said 'I'll beat you up.'

I know you. You're the one who said 'fuck you' and then asked for a juice box.