Such boys show the way to take a bend in top! (3-2)
I believe the answer is:
ton-up
'such boys show' is the definition.
The definition suggests a singular noun which matches the answer.
'way to take a bend in top' is the wordplay.
'way' becomes 'n' (Compass direction - North).
'to take' is a charade indicator (letters next to each other).
'a bend' becomes 'U' (a U-bend is a kind of bend - pipe under sink).
'in' is an insertion indicator.
'n'+'u'='nu'
'nu' put inside 'top' is 'TON-UP'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for ton-up that I've seen before include "Fond of travelling at high speed" , "Travelling at one hundred mph" , "fast!" , "Going at 100 mph" , "going quickly" .)