I'm microwaving the doughnuts but I'm not going to tell my brother until they are all gone.
Why do you not want to tell him that?
I want to make him feel guilty.
Why would you keeping that from him make him feel guilty? A lie of omission would be more likely to make you feel guilty wouldn't it?
I guess thats true but I still won't share with him!
Wouldn't you feel bad if your brother didn't share with you. You shouldn't keep the doughnuts from him because thats unfair.