Clever use of 'show, don't tell' to explain how the Doctor got out of the exploding plane... although, considering this week's events, that might not have been the most tactful thing to show.
"Why do you have a Union Jack parachute?" "Camouflage." "Camouflage?" "We're in Britain."
"Right between the eyes... twelve times if necessary."
"Texting? How full-human can you get?"
... I feel that way about my own laptop sometimes.
"Doctor John Disco. That was my plane."
"You don't invade planets without a plan. They call them 'planets' for a reason. 'Plan it'. It's to remind you to make a plan."
"A video, supposedly showing an alien in London, has been posted all over the internet."
"Wnat's your name?" "Osgood." "No, your first name." "What's your first name?" "... Basil."
"How did you survive?" "Five rounds, rapid."
"Why does peacekeeping always involve killing?"
'Sullivan's gas' becomes 'the imbecile's gas'. Someone in the script office has obviously been watching their 1970s TV...
"How are you going to protect your Glorious Revolution from the next one?"
"SIT DOWN AND TALK!"
"I will not change my mind." "Then you will die stupid!"
"We know the boxes are empty, though. We can't forget that." "You said that the last 15 times."
Every once in a while, the Doctor loses his cool and this was one of those times... for the last quarter of an hour or so, he goes the full Glasgow on Kate and the Zygon. Magnificent performance.