No thanks

Mother and Father, I'm writing here to let you know that I won't be owling your Christmas gifts off in time for Christmas Day.

I'll send them off later, at some point when it's a bit more convenient for me. Possibly this could be months from now. Sorry about that, I'd give more explanation but I have exams to think about right now. Let's just say that something's come up, yeah?

Your son,
Draco