So this is very very odd, though apparently not odd enough to post anonymously, and will probably only appeal to a certain demographic (at least as old as me and/or clinically nostalgic) but... okay, so I have a bird-themed playlist (Oh, Mr. Finch) which pointedly does not include Tom Lehrer's "Poisoning Pigeons in the Park," because, but actually I rather expect Harold would secretly find it funny, so...

Short version: John walks in on Harold and [someone] having a total geek-out Tom Lehrer fest. Extra points if [someone] is Root, but any canon character will do.

If you like the concept but don't know Lehrer's work, feel free to run with another Harold Is Secretly A Fan scenario. I just need something pointlessly funny right now.