i've only smoked laced weed once, and it was actually pretty sweet. Open Eye Visuals and everything. But yeah laced weed is very very rare, and sometimes if someone has alot of energy or are paranoid or scared they clench their jaw, and acting weird is something alot of people tend to do when intoxicated. As for the blacking out some people do black out when they smoke alot of weed. so chances are it was just really good shit....get more if you can