I dont know how to put this into one sentence, simply because i've been drinking and everyting is un-simplified right now.
But think of it as if someone said something to you and you knew it was complete bullshit and you called them on it and they still denied it and then you provided proof that they were talking SHIT, then you OWN them. Kinda like you put them in their place.
For example say that I told you that 1 + 1 = 3 and you said your stupid it equals 2 and I continued to say fuck you, your an idiot and dont know what your talking about and then you took your fingers and said 1 (and showed your pointer finger on your left hand) plus 1 (and showed your pointer finger on your right hand, and then put them side by side and said) equal 2! OWNED