"Listen Bloggs, heres the deal, you sit there like a good chap and listen to what I have to say. It may be a complete load of ****, but just do it. Don't open your trap, I'm the Captain; I know everything!"
Slightly altered to read...
Listen Bloggs, heres the deal, you sit there like a good chap and listen to what I have to say. It may sound strange but just do it. Don't open your trap, I'm the Training Captain; I know everything.
This works very well for brand new First Officers on type (the 200 hour wonder crowd), and further, if they argue just one little bit, send 'em packing.