Can I just not deal with my bil's slow friend?
Seriously? Why wouldn't you like him?
He agitates me with his slowness.
You should be more respectful toward his friend. He may be slow, but he can't help it.
He isn't slow he is a child. I'm fed up with not being able to do anything because this squirt is a child and can't defend himself.
Your families friends are important to them, and if your family is important to you then you'll respect who they hang out with. If you don't want to spend a lot of time with him then you don't have to, but you need to show some respect.