In disorderly snack bar we'll display cheek

I believe the answer is:

answerback

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'display cheek' is the definition.
The definition and answer can be both to do with communicating as well as being verbs in their base form.
Maybe they are linked in a way I don't understand?

'in disorderly snack bar we'll' is the wordplay.
'snack bar we' anagrams to 'ANSWER BACK'.
However, I'm not sure how the anagram is indicated.

Can you help me to learn more?

I've seen this clue in The Daily Mail.

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