Harvey Birdman, Attorney at Law S02 E06 Back to the Present

"Feel the Power of Attorney!"

The Jetsons enlist Harvey's help to sue us for screwing up the planet. Turns out there's a reason all the buildings in the Jetsons' world are on stilts: the ice caps melted and the earth is covered in water. Meanwhile, Phil is terrified - or is it excited - that the Jetsons are there to abduct and anally probe him.