I'm thinking of putting on the movie The Birds because I know my kid brother is scared of birds.
I feel like that would make him really scared, why are you making him watch something like that?
It's the only way to make him scared to me.
Some people are badly affected by watching horror movies or seeing scary images. They might feel fear more intensely when faced with powerful images and it is much harder for them to put things into context.
I have to do it, or else he would never pee in the toilet and he will make our whole house stink like shit.
Proper potty training is what he needs instead of being scared with birds. I hope you do not scare him, and if you are unable to potty train him, at least tell your parents about him so that you will not have a stinky house. It's something that you should be eager to do because it's beneficial to your younger brother and the smell in your house.