No - it's not the start of a bad joke but a serious reflection on miracles.
Mark's gospel (a biography of Jesus written about 30 years after his death and resurrection) records a story about a time when Jesus and his disciples crossed the Sea of Galilee by fishing-boat (Mark 4:35-41). During the crossing, 'a great windstorm arose and the waves were breaking into the boat, so that the boat was already filling'. Miles from land in a small fishing boat that's very bad news. So the disciples wake Jesus up, saying, "Teacher, do you not care that we are perishing?" Here's how the story ends: 'And he awoke and rebuked the wind and said to the sea, "Peace! Be still!" And the wind ceased, and there was a great calm.'
How does this extraordinary story relate to flight simulators?! Note how the disciples responded: 'they were filled with great fear and said to one another, "Who then is this, that even the wind and the sea obey him?"'
What's significant is that the disciples had already seen Jesus perform many amazing miracles. They knew he was someone special. Yet what happened on that boat still caused them to say, "Who then is this...?"
What's special about this is that the physical world obeyed Jesus' command. The physical world. What kind of power could possibly cause physical matter to "do what it's told"? Only one kind of power. A Creator's.
And this is where we get to flight simulators. Think of a modern, ultra-realistic flight simulator - the kind used to train pilots. In a realistic flight simulation, you can't just make the plane appear as if by magic in the sky. That would be impossible. To get the plane into the sky you have to increase the throttle and generate lift and allow for wind and do all the things you would in real life.
Let me say it again: you can't just "command" the plane to reappear in the sky. But the creator of the programme can. The programmer can simply give the command and the "physical world" he programmed will obey his orders.
Christians do not believe the physical world we inhabit is some giant computer simulation (sorry Matrix fans). But they do believe there is a Creator behind it who (being the Creator) is no more limited by his own creation than a Programmer is limited by his programme.
That's why the argument that miracles are inherently impossible is so ridiculous. Clearly, if there isn't a God, miracles are impossible. But if there is a God who exists above and beyond this universe (as most people believe) it goes without saying that miracles are possible!
But what the terrified disciples witnessed that day was a man displaying a level of power and authority over the physical world that only God could have. So they're left asking, "Who then is this...?"
What do you think?
P.S. for more info on this story you can hear a sermon on this passage here (see July, 2013).