"Puerile" is a word in ENGLISH

puerile ENGLISH
Definition:

Boyish; childish; trifling; silly.

Few words of positivity

Sometimes the ultimate act of self-compassion is turning off your phone and looking someone in the eye.

Amy Leigh Mercree, The Compassion Revolution: 30 Days of Living from the Heart

WORD SUGGESTIONS
Laugh your heart out.

Golfer: "Please stop checking your watch all the time, caddy. It's distracting!"Caddy: "This isn't a watch, sir, its a compass!"

boyish ENGLISH

Resembling a boy in a manners or opinions; belonging to a boy; childish; trifling; puerile.

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under-age ENGLISH

Not having arrived at adult age, or at years of discretion; hence, raw; green; immature; boyish; childish.

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