from The Goon Show Series 7 Episode 22: The Great Trans-Africa Ship Canal

Henry Crun: With the closing of the canal our ships have been forced to travel around the Cape.

Politician: Ahhhhh, just a minute, couldn't they travel overland?

Henry Crun: We've tried that, but it ruins the bottoms of the ships!

...

Seagoon: Gentlemen, you realise of course that due to the canal closing British aeroplanes are forced to fly around the Cape. It is my intention to cut a canal across Africa so that they can fly over that.

Henry Crun: High over a canal? What if they crash, They'll all drown!

Seagoon: Don't worry folks! All aeroplanes will be fitted with the new wooden lifeboats.

Attlee: Yes, but even lifeboats can sink!

Seagoon: They can't in this canal, there's not going to be any water in it.

...

Grytpype: Gentlemen, why spend all this money, when for 14 shillings, the Moriarty horse-drawn zeppelin service will fly you round the Cape in 80 days...

Moriarty: Owwwww!

Grytpype: ...thereby avoiding the traffic at Oxford Circus.

...

Seagoon: Major! I've come to inform you that we are building a canal and I'm afraid it's going to cut right through your house.

Bloodnok: What! Well if you think I'm going to run downstairs and open the door everytime a ship wants to come through you're barmy.

Seagoon: You don't have to open the door... You can leave the key under the mat!

Bloodnok: Over my dead body.

Seagoon: No, under the mat