Possible Clues:

• 13-19 or 65+
• A British scam involving English teenagers, say
• 25-54, e.g
• A request given backing with noise in a set of peers?
• In which one finds peers and English bishop in a grand conspiracy
• Demographic cohort
• 18-34, for example
• Take 'C' bra off outside for example, being up for 18-30s?
• People of similar years making a noise after request rejected
• Branch of maths shunned by learner, confused head of kindergarten, etc, and similarly old people