Because the UK this week voted to leave the European Union, a decision that has shaken the world.

And not in a, Muhammad Ali beating Sonny Liston kind of way.

More in a, Those IKEA meatballs you love contain horse kind of way.

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Credit: Eric Liebowitz/HBO

The fallout in Britain has been swift and significant.

Which should make me happy, but in this situation it doesnt.

Its like catching an ice cream cone out of the air because a child was hit by a car.

Ill eat it, but its tainted somehow, Oliver joked.

(Of Johnson, Oliver said he looked like a shaved orangutan with Owen Wilsons hair.)

First, Britain was already independent.

In fact, its what many other countries celebrate their independence from, Oliver said.

He found a way to make this whole thing about himself, Oliver said, before addressing the audience.

You might think, Well that is not going to happen to us in America.

Video of Olivers opening segment will be added when its made available.