Get Your Finger Out Of My Mouth!

Jamie thinks it's dead funny to poke his finger in my mouth when I'm trying to yawn. I hate this as a yawn should be satisfying and a finger is just off-putting. I told Jamie it was like me poking my finger up his bum when he was in the middle of his morning pooh. He disagreed. I told him it was the same thing, a finger being poked in someone's orifice while they were in mid bodily function. He still disagreed. He thinks because he was right about the dog's life debate that he is always right now. There's no telling him.