1. Click out means to disengage your thinking mind and become an enraged beast. Like Marcellus in Pulp Fiction threatened, to click out means to, "go medieval on yo' ass".
2. Click out is almost like a violent blackout, where you start hurting, maiming, and/or killing and often don't remember what you did afterwards.
1. If you were to research the cause of a lot of serious violence, you would discover that the person doing the damage got so pissed off that they clicked out.
2a. I'm about to click out. I can't be held responsible for my actions.
2b. Second degree murder is the type of thing that happens when a person clicks out.