expression, noun
storm in a teacup; tempest in a teapot
Idiomatic expression for making a big fuss over a trivial matter. Equivalent to the English 'storm in a teacup' or 'tempest in a teapot'.
彼の怒りはコップの中の嵐に過ぎない。
His anger is nothing more than a storm in a teacup.
A calque from the English idiom 'storm in a teacup', using コップ (cup) and 嵐 (storm).