Time machine.

[Kaz]

Barak Obama and David Cameron are shown a time machine which can see
100 years into the future.
They both decide to test it by asking a question each.

Barak goes first.

“What will the USA be like in 100 years time?”

The machine whirs and beeps and goes into action and gives him a printout, he reads it out
"The country is in good hands under the new president, crime is non-existent,
There is no conflict, the economy is healthy. There are no worries”

David thinks “It's not bad this time machine, I'll have a bit of that” so he asks:

“What will England be like in 100 years time?”

The machine whirs and beeps and goes into action, and he gets a printout.
But he just stares at it.

“Come on David” says Barak, “What does it say”

David replies,

“Buggered if I know! It's in Arabic!”

[buster]

[Kaz]

That was pretty much my reaction too