Cool trick helping to channel lateral thinking? No (15)
I believe the answer is:
inconsideration
'thinking? no' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'cool trick helping to channel lateral' is the wordplay.
I cannot quite understand how this works, but
'cool' could be 'in' ('in' can mean fashionable or cool) and 'in' is located in the answer.
'trick' could be 'con' (a con is a fraud or trick) and 'con' is present in the answer.
'helping' could be 'ration' (a ration is a serving or helping) and 'ration' is located in the answer.
'lateral' could be 'side' (synonyms) and 'side' is located in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for inconsideration that I've seen is " It's unthinking".)