Being oddly loud at music venue during meal (5)

I believe the answer is:

lunch

I'm a little stuck... Click here to teach me more about this clue!

'meal' is the definition.
(I know that lunch is a meal)

I don't understand the rest of the clue.

(Another definition for lunch that I've seen is " Midday meal".)

I've seen this clue in The Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.