Extreme meanness, affectation, conceit, or impudence.(noun)
Youthful folly.(noun)
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Use "puppyism" in a sentence
"Our cat knows who the queen of the domain is and is quite sure that anti-puppyism is the one true faith."
"Lounging near the doors, and in remote corners, were various knots of silly young men, displaying various varieties of puppyism and stupidity; amusing all sensible people near them with their folly and conceit; and happily thinking themselves the objects of general admiration — a wise and merciful dispensation which no good man will quarrel with."
"I think him a very handsome young man, and his manners are precisely what I like and approve — so truly the gentleman, without the least conceit or puppyism."