The Master would laugh. Oh, how he would laugh if only he'd noticed before he was on the Doctor's level.
Yes, the Master happened to go for the juice as well and there is a tiny black-and-white kitten watching the Doctor's struggle from inside the sleeve of the Master's suit.
He's not sure whether to be pleased that he's small enough that getting out of the suit is not an issue or annoyed that he's so much smaller than the doctor.