Not only did I know the music, I currently have much of it on my iPod! I like 80s music. What was funny was reading a reference to a random song that I'd just listened to on shuffle in the last week.
As for the slang, what I didn't know, as Bookworm_Girl mentioned, was oddly all on my Oxford dictionary. And then other pop culture references, such as brands, television series, etc., some of what I didn't know I googled. I was also inspired to youtube some old commercials which was actually pretty fun - definitely retro blasts from the past! Here's one for Tizer
, one of the drinks mentioned in the book, from 1982, the year the book is set in.
So I thought the cultural references were fun. But I do think the author's goal must've been to chock it full of as many as he could cram in!