From The Enigma 
NPL Magazine
March, 2018
AROUNDEVE



The two answers to this flat are spoonerisms. Notice that the first word in the second answer has one more letter than the first word of the first answer. 

When that crackpot on my floor
Came a-banging on my door
With a "photo" from _ _ _ _   _ _ _ _
Proving only he's a bore - -
Past that not a smidgen more - -
"You are the monster," I swore,
"What are you bugging me for?
From now on you must  _ _ _ _ _   _ _ _ _!"

HINT:
The first letter of the first word in the second answer begins with a silent letter.

Answers:

LOCH NESS
KNOCK LESS