As a matter of fact 

It means actually; in fact, in reality, in truth, as it happens, believe it or not, to tell the truth, in actual fact, in point of fact.

-Yes, As a matter of fact , I have started reading my copy of Harry Potter..

-Well, As a matter of fact , I was going to ask your permission to..

As a matter of fact by Joud October 17, 2013

as a matter of fact, it isn't 

The best response to a derogatory or sarcastic remark.

Vegeta: Is that okay?
Tien: As a matter of fact, it isn't!

as a matter of fact, it isn't by blakkheim16 October 23, 2011