BtVS/HP crossover ficlet, "Birthday", part of the "Not Synonymous" universe

I really wanted to get this posted in time for Harry's birthday but didn't quite make it (at least not in my own timezone). However, it's still July 31st in some places, so I'm going to go ahead and post it - and hopefully won't find five-billion errors when I re-read it again after a good night's sleep. :P

Fits into the universe sometime after "Wish" and before "Family".

( BtVS/HP crossover, Birthday, Not Synonymous universe, AU, FRC )