What is does do is impair one's judgment.
Someone who is high may decide to do something they would think twice about if they were fully sober.
If someone is walking around trying to hold himself out as a "gangsta" then maybe if he is high he might do something like take a swing at a bus driver that if he were sober he would think to himself, you know maybe this is not the right time or place to show out as a "gangsta". (recall the tweet "you ain't tell me you swung on a bus driver")
If he was high and on the phone to some girl maybe he decides to impress her by acting the "gangsta" by jumping some short hispanic guy who dares to ask him what he is doing in the neighborhood.
That way the girl can spread the story back home about how the No_Limit_Nigga gave a beat-down to some hispanic guy, giving him some gangsta cred.
However, if he was sober maybe he thinks that's not such a smart plan.
You have a big imagination.
Those on the streets don’t need to be high to sucker punch your lights out...Just for giggles. Later when they get high, they have a good ol’ belly laugh recalling how they took turns stomping on your face before looting your pockets.
That is an excellent analysis of what might likely go through a young inexperienced pot smoker’s mind.