I know by experience, I smoked weed for 11 years straight.
When you are baked, people call you to do some pointless fun stupid shit (that I'm already doing before anyone even ask, spontaneously when I'm drunk), and the potheads tend to refuse because they prefer staying catatonic in their spot like a sofa ticks with a joystick in their hands, talking crap they think is funny, because everyone laughs, but it's just because they are all in the same state, and that is actually boring as fk.