noun
surefire joke; no-fail joke
Colloquial term for a joke or comedic bit that reliably gets a laugh, often used among comedians or in entertainment contexts.
See also: 鉄板
彼の鉄板ネタはいつも会場を爆笑させる。
His surefire joke always makes the audience roar with laughter.
お笑い番組で、芸人が鉄板ネタを披露した。
On the comedy show, the comedian performed a no-fail joke.