End of exams party.
K wrote her last exam for the semester yesterday and L wrote hers today so, tonight, they're having a party to celebrate. Actually the party started around noon and will probably last until about noon tomorrow. Currently they're camped out in the living room, watching a movie.
Fortunately, they're a really good bunch of teenagers — polite, funny, reasonably well-behaved — and I don't mind having them around that long.