'I might be wrong...'
'If only...'
'I might be wrong, chief, but I think your brother might be coming into the flight deck. This makes me feel cheery.'
'Oh no...'
...
'Hello, just checking on my big brother.'
'Oh Sherlock, get out.'
'Ah Marty McFly, don't be so rude. I even called you big even though you are an inch smaller than me.'
'How h-how da-'
'Easily.'
'Oh.'
'So you still stutter when you're baffled.'
'So so you still have a lisp when you're drunk. Sherly.'
The 'identical' brothers eyeballed each other and 'Sherly'stalked off.
...
'So. Got any more Family chief? Your police officer sister, Sandra?'
'I've got a decade older brother of whom I'm not allowed to speak of.'
'Ooh I'm in suspense...'
'He's the government.'
'Oh right...well that really helps. I was hoping that he was behind the Tesco cashier. In Ipswich.'
'Hahahahaha! I'd love to see that...I deduce from your cabbage that I want to die.'
...
'Aw skip isn't it so exciting that the famous Sherlock Holmes, your brother, is with us on our flight!' fidgeted Arthur, beaming.
'Yes...I'm practically ecstatic...' Said Martin, his voice trying to imitate Sherlock's and failing miserably. In the end he just sounded like he had a cold.
'I'm gonna see if he can make one of his brilliant deductions about me!' said Arthur, sounding about five.
...
'Hi Mr. Holmes and !'
'Hello Arthur.' Greeted Sherlock with an air of sarcasm.
'Could you do a...you know...thingy on me?'
'What's a thingy?'
'Oh... You know like knowing everything about me...'
''Oh, right a deduction...Ok, don't see why not. I'm bored anyway. Your Mum cuts your hair and you had porridge for breakfast, you went to a 'public' school, and for some reason you look up to Martin.'
'...WOOOOOWWWWWW!'
...