In the car together for over two weeks, now

Yesterday, for no reason, no reason at all, J starts saying random things in a British accent. Out of nowhere exclaiming totally mundane things, like, "Left turn ahead!" in some cockney accent he's picked up from God knows where. I sit there in silence for a while, just taking it, then after I think it's gone too far I start turning to him from the passenger's seat every time he does it ("Okay there, love, vista point ahead!") and giving him a look that I hope imparts to him the urgency with which I need him to stop. A look that says, "Listen, there's a reason I'm here with you with this ring on my finger and that reason is I enjoy being with you, but that could change if you don't knock it off."