"Might I exchange this change for a lovely crisp note?" And shush - I'm amazed I lasted as long as I did without this happening.
They venture into Diagon Alley a few days later, and end up hiding in a corner at Gringotts' for an hour until the witch with the Quick-Quotes Quill stops looking around for them and disturbing the goblins to ask after them and walks out.
A comparatively tall goblin faces up to Oliver's chest when they emerge from their corner – Aidan's blond hair slightly ruffled for reasons unspecified - and very politely inquires their reasons for visiting the bank.
Oliver tries to explain that they were only hiding from someone, but the goblin has such an expectant expression that Aidan tugs on his sleeve and pulls a handful of Galleons from his pocket. "I need some Muggle money," he excuses quickly.
The goblin looks oddly delighted at their custom, so Aidan shrugs at him as they make their way to a counter. "Might I exchange this change for a lovely crisp note?" he asks in a lyrical voice, emphasising the rhyme. Oliver rolls his eyes.
They leave the bank with pleasantly crisp notes clutched in Aidan's delicate hands; hand in hand they wander back down Diagon Alley and pointedly ignore the people staring at them.
"Well, I feel like we should spend some Muggle money now," Aidan says wistfully as they pass through the Leaky Cauldron.
Oliver chuckles. "Well," he says lightly, "lunch first. Somewhere Muggle. And then… oh! In Muggle culture they go to this place called the cinema on dates all the time."
"The cinema? That sounds painful." Aidan insists on taking the Underground, even though he has no idea where they're going; they end up in a street in Euston, obscure and unconnected, and to make up for the fact that they've ended up in backstreet nowhere they settle into an unreasonably busy sandwich bar. Oliver freaks out when he sees the menu.
"The Sherlock wrap?"
In the end he gets the Watson wrap, and Aidan gets the Sherlock wrap, and something in his chest is enormously satisfied by this. "I wonder why they have this Holmes theme? Completely not complaining, but they're not that close to Baker Street."
"Are you serious?" A young woman leans across from a nearby table. Oliver raises an eyebrow at her; her blond hair seems to corkscrew straight out from her head and defy gravity, but her face is youthful and open and shining with fondness. "They filmed Sherlock next door. You know, the modern TV series?"
Aidan stares at her. "The what?"
"Television," Oliver says quickly. Aidan's face clears. "By modern, do you mean it was made recently?"
The woman frowns. "No – well, yes, it was, but I mean it's set in modern times. Like, it takes place now. You really haven't heard of it? If you're a fan of Sherlock Holmes, you really have to watch it."
Oliver looks at Aidan, who makes a mildly impressed face. "Maybe we do," he agrees.