The most common and most likely answer to this crossword clue is the 2 plus 3 plus 3 plus 5 letter word OF ALL THE NERVE
O
F
A
L
L
T
H
E
N
E
R
V
E
Buddy explains!
The straight part
We know that "That shows cheek, lip and neck" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case that shows cheek, lip and neck = of all the nerve.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.