"Yes, my TARDIS! Mine! Meaning yes, my own business and... wait, is that Aristotle's lost treatise on mathematics? Thought I lost that years... NEVERMIND!"
The Doctor looked over to his older self, utterly exasperated.
"Do us a favor? Lock the door on your way out, please? You wouldn't believe who's been dodging in and out of here tonight. I'll owe you one."
Besides, one of these days he'd likely get around to such activities with Dr. Song and remember what all the fuss is about.