I'm having a birthday meal but I really don't want my sister's boyfriend to come to the meal.
Why don't you want him there?
I think he is an asshole, that's why I don't want him there.
It's not very nice to exclude people from big events like that. You should learn to tolerate your sister's bf at the very least.
No, I want him to be targeted and set up for the next few months.
That's really extreme that you would want that for him. You really should take the time to understand that holding this grudge against your sister's boyfriend isn't going to do anything good for you. Maybe talking to the boyfriend and taking care of these issues would be best.