Love, Simon
Martin makes a joke at the lunch table to Abby that actually gives a clue as to the identity of Blue. He says, “Hey, what do you get when you mix black and Jewish? It’s Blue-ish.” Though both in and out of context, it's pretty insensitive.
The Departed
In the Leonardo DiCaprio film, The Departed, an “X” can always be found on the screen right before a character dies. If you rewatch this, keep track of how many times it happens and you'll realize that it's a faultless pattern.