“Dude, you sure you’re OK to drive? Your pupils look a little dilated” ranks among the top three things nobody wants to hear as the third blotter of acid kicks in — directly between, “Please bend of over the examination table and try to relax” and “Sir, step out of the vehicle right meow.”
The later, of course, being the natural outcome of attempting to drive on powerful, synthetic hallucinogens so don’t be jerk and try to.