DuckTales, Season 1

Scrooge:
Mt. Neverrest, the highest peak in the world! Most prized of the seven summits, Neverrest has claimed the world's finest explorers. It is said to be completely unclimbable. But now, that smug stack of stalagmites has to deal with Scrooge McDuck!

Louie:
Okay, so instead of spending Christmas in a billionaire's mansion, waiting for Santa Claus...

Scrooge:
That man is not allowed in my home. He knows what he did.

Louie:
... we're following an old man up Mt. Certain Doom, here?

Huey:
Oh, Mt. Neverrest is three times deadlier than Mt. Certain Doom.