I did it! I caught you in the act!
Uhh, what  act did you catch me in?
I caught you in the act of killing someone.
It looks like you were waiting for me to do or say something wrong so you could "catch" me. It's dumb what you're trying to do.
What I did is not dumb. You are guilty of killing a person.
You seem to be under the impression that I murdered someone, which I have not. You should never falsely accuse someone of something so heinous, they could end up in prison!