the world > action or operation > behaviour > affected behaviour or affectation > [noun] > theatrical or exaggerated behaviour > camp behaviour, speech, etc.
1965 Nov. 15 The high-campery of his fantasy portraits.
2011 (Nexis) 14 Feb. (Guide section) 12 Somehow, amid the high campery, strains of drama ring true, as beloved characters tackle some big dilemmas.