It wasn't that Percy was eavesdropping (he really wasn't. Because that was rude and just not a proper British thing to do), but it was a little hard not to notice when excited girls giggled their way over to tables and asked for autographs.
Tearing his eyes away from his notes, Percy glanced up to see what the fuss was about. Of course, he had to wait until the girl left before he really realized what was going on, himself.
"Oh," said Percy, because he was an amazing conversationalist, no really. "You're Mitchell." And then, because he didn't want to seem strange, he plowed straight ahead. "We talked on the 'Net."