Obivious
Saying something so clear it's like you're giving a lecture to someone who just got their first brain cell.
'Obivious, the door is closed.', said by someone who just walked into a wall.
'You're obivious, you're the one who forgot the password.', said by someone who also forgot their own name.
'Obivious, the dog is barking.', said by someone who's been hearing the dog for 10 minutes.