NEVER GONNA GIVE YOU UP

Rick Astley is timeless.

and the song came out like 10 years before that? so what?

Well i looked it up, guess "rickrolling" didnt start happening til 2008. Not that it really matters anyway. It never says anything about going to hogwarts with harry or something though. It could and should be assumed that when he says imagine going to school at hogwarts....he means present day.

And then again, Hogwarts was rebuilt after the battle.