Family Guy has too many non-sequitor cultural allusions to be very funny except in a slapstick sort of way, even among Americans who speak English as their native language. It's also incredibly violent. The violence is rather like a crutch for them, as they depend upon shock value and blood in order to fill in the less interesting gaps. I had become very desensitized to it after watching for so many years, and one day my wife comes in and exclaims "I can't believe you're letting him watch that!" as my son and I were enjoying the episode in which Stewie is beating Brian senseless over an unrepaid loan. I paused and stared at it and thought, wow, there's a little baby with a broken bottle cutting a dog with it, and I've convinced myself that this is funny.
Anyway, I voted for the third option.