You know you're a true Harry Potter nerd when you find Harry Potter pick up lines funny. Pick up lines like these:
Hagrid's not the only giant on campus, if you know what I mean.
Are you using the Confundus charm or are you just naturally mind blowing? I've been whomping my willow thinking about you.
I'd like to get my basilisk into your chamber of secrets.
Wait, what am I talking about? Who could not find those funny?