God calls down to Noah and says, "Noah me old china, I want you to make me a new Ark".
Noah replies, "No probs God, me old Supreme Being anything you want after all you're the boss."
God interrupts: "Ah, but there's a catch. This time Noah, I dont want just a couple of decks, I want 20 decks - one on top of the other".
"20 decks", screams Noah. "Well, OK boss, whatever you say. Should I fill it up with all the animals just like last time?"
"Yep, that's right, well sort of right this time I want you to fill it up with fish", answers God.
"Fish?", queries Noah.
"Yep, fish well, to make it more specific Noah, I want carp - wall to wall, floor to ceiling. Carp!"
Noah looks to the skies. "OK God my old mucker, let me get this right, you want a New Ark?"
"Check".
"With 20 decks, one on top of the other?"
"Check".
"And you want it full of Carp?"
"Check".
"Why?" asks the perplexed Noah.
"Dunno", says God, "I just fancied a Multi-Storey Carp Ark".