Many conflicts can be resolved by bludgeoning the subject with a giant key.
Women aren't as good at being fighters as men. Even if they try to fight, they'll be easily taken out so that the men can do the heavy lifting.
If you are taking a test but someone rigs it to be unfair by making you frustrated or kidnapping you during that exam then you deserve to automatically fail that test no matter how well you actually did on it and you will it get the chance to retake it fairly.
Evil is an efficient method of transportation.
Walking into hotel rooms or homes uninvited isn't tacky in the slightest. Nor is opening chests within and stealing the contents, just say that you're saving the universe.
Knocking a rebellious kid unconscious with a giant gun blade is heroic.
Kids, if you're ever unwillingly taken away from your world and invited by a duck and a dog thing to have multidimensional adventures risking your own safety, don't even THINK about trying to contact your parents. They're not worried.
If you're badass enough, you can travel through space without a ship or adorable monsters helping you.
If you encounter someone who looks and acts exactly like a human but somehow isn't human — such as if they're supposedly incapable of feeling emotion - it's perfectly appropriate and even heroic to kill him/her in cold blood, whether they've done anything bad or not.
Kids, if people destroy worlds and try to kill you countless times, manipulate you and steal the hearts of millions, and you make the sensible decision of trying to stop them, why you're a cold blooded monster! Sure, they were acting purely out of self interest, with no regard for the countless lives that would be lost, but they were sexy, you fiend!
On the other hand, any human is worthy of forgiveness as long as they're a brooding, androgynously beautiful teenage boy, never mind that he unleashed an endless wave of The Heartless across multiple worlds and put the entire universe in peril basically so he could go on a joyride.
There's absolutely nothing wrong with enlisting a band of foreign adventurers to destabilize a small African nation.
Stalking a 15-year-old boy is ok if you're Bishonen, and will earn you fangirls who will write about your loving relationship.
If you saw someone wearing a black coat, it means they're from Organization XIII!
Anyone in a hoodie should be killed on sight!
Splitting yourself apart is a good way to get superpowers even if it slightly taxes your humanity.
Don’t try to help your friends when they are facing a personal conflict with someone. These people are doing what their hearts command and you should never interfere even if their heart’s decision leads to their death.
You know that person your father figure holds in high regard? Don't trust him. He's evil.
You can easily tell someone is evil - just look if they're old and have yellow eyes. Sure, you've never seen any tropes that suggest that... but you should know!
You're foolish for trusting the first person you meet when you go to another world... unless that person is a protagonist.
You can learn amazing things from playing board games!
Being an annoying supehero is a good way to get banished to a dark realm.
You have a single loss and need someone else to save you for once after an otherwise messianic track-record, everyone will lose all faith in you all at once and will try to keep you out of the way by sending you on an aimless quest. That'll teach you to not be perfect!
An eccentric wizard with no combat experience would make a better mentor to teach two people how to use a new weapon (one of which with no combat experience) than a wizard who does have experience in the use of that weapon and is otherwise doing nothing but sitting around waiting for the other heroes to do something.
If you try to save your friends and the people you dearly love by using unorthodox means then You deserve to be punished for using said means because you are abusing these methods.
If you have committed numerous atrocities towards many people in life for years for the sake of fulfilling a noble goal that brings peace and balance to society, then as long as you proclaim yourself to a Well-Intentioned Extremist, you will be given the right to be Easily Forgiven and ascend into the heavens when you die.
It's completely okay to throw a Complete Monster into somebody's bedroom.
NEVER interrupt someone in a black coat when they are speaking.
Whatever you do? Do NOT let a pirate breathe in your face.
