[If the jacket was going to explode Q would be proudly advertising it as a special feature, never fear.

More used to dealing with surly, impossible, unapologetic people, he just blinks mildly at Tim as he goes through his explanation. This is quite novel.]

There's really no apology required. You should be angry. I'm bloody furious. [He looks as placid as ever, and pauses before explaining.] But it's a cultural curiosity among the British. Often the difference between fury and slight irritation comes down to a faint twitch of a muscle.

[He points to a little tug at his cheek.]

See? Raging like the heart of the sun.

[He may be trying to put Tim at ease.]