"Me? Trouble? Ha!" The Doctor rolled his eyes to express his sarcasm. "More like, I'm going behind you, trying to fix what you've disrupted."
What the Master had said was discomforting, because the Doctor knew that there was some truth to the matter. "You just leave my Companions out of this." He frowned. "They keep me... grounded." He then took another loud sip from the straw.