I'm thinking of riding my bike back and forth over my sister's toes until I get bored.
Why would you want to hurt your sister?
I'm thinking it will be fun because I'm bored
You shouldn't do things to harm your sister when boredom strikes you. Do something productive, that doesn't involve hurting people.
What will you do about it?
I will try to stop you from hurting people. It is not okay to be mean to your sister just because you feel bored.