idiom: to startle or give someone a surprise; to fluster or thwart someone's plans
彼は最後の一投で相手に一泡吹かせた。
With his final throw, he surprised (and beat) his opponent.
新製品の発表でライバル会社に一泡吹かせた。
The new product announcement caught rival companies off guard.
彼女は派手な反論で会場の人々を一泡吹かせた。
She startled the audience with a striking rebuttal.