Next time you fall asleep in class, wake up at the end of lecture, but can’t stand up because your penis is erect, blame your brain for stopping norepinephrine. But at the same time, vasodilation isn’t so bad. It’s just repairing and maintaining functionality of our most important organ. Or maybe it’s just because you don’t want to piss your pants. Either way, just stay seated, take a couple deep breaths, and wait it out. Don’t want to stand up and embarrass yourself in front the class. Just stay seated and look like a keener–or a loner. Either way, it’s better than wearing a boner in front of 30-100 people.