He'd finally dragged his ass out of his TARDIS. Just in time to see a notice of a party. There was no way he was going to miss that much activity, not for anything. Besides, being left on his own for a bit might have done him good, but there was a limit to how much of his own company he could handle. He spotted the Master, with a white rose, had no doubt that it was his, and made his way over.
"How's your head?" he asked, casually and pleasantly, once he was there.