I'm going to lash out at this guy
Why do you want to lash out at him?
I'm sure this guy was talking about me behind my back. I want to get back at him.
You shouldn't lash out or get revenge on people. He may have talked behind your back, but you should calm down and ignore him.
Fuck that! You don't know what I've been through!
I see that you're upset, but you should never lash out at someone. Just talk to him and call him out on it.