i totally already know that - A fake reply used to mock someone who says something you alr

A fake reply used to mock someone who says something you already knew. It's like giving them a side-eye and a middle finger at the same time.

'I totally already know that', said to my brother when he told me the same joke for the fourth time.

'I totally already know that', said to my teacher when she reminded me I forgot my homework again.

'I totally already know that', said to my dog when he barked at the same mailman again.