"This is Nautilus." Why yes, that is pity because maybe The Master has figured out a few things off with himself but may or may not be admitting to those.

"Sushi sounds good doesn't it?" Then begins to lead, The Master, that is if The Master will follow. Ten will walk a bit and then glance back.

The question isn't as random as it may seem - Ten doesn't know the last time someone ate or slept. Sooner or later, in this place that will catch up to The Master. Of course, The Master can regain those abilities but like all The Doctors they too got hit with that.