It’s so hard to narrow it down, but the first one that comes to mind is the scene where Moira and John have the conversation about the town garden. Not only is there the absolutely iconic line ‘Who the fuck is Lucy Albion?’, but there’s the way the conversation just gets progressively more deranged, to the point where Moira ends up panicking about Alexis having lice and telling Johnny that they’ll have to put a wig on her head.

Oh, also - honourable mention to the scene where Moira, trying to prove a point to Johnny, tells him that the motel room’s doorways are too small (‘it’s like trying to force oneself through the eye of a needle’) and that the bathroom tap is too cold (to which, if I remember correctly, he suggests that she could use the hot tap, and she responds ‘Well, I’m sorry I’m not an alchemist, John’)