最さい後ごっ屁ぺ

noun

stink bomb; weasel's defensive odor

Literal meaning: the foul smell released by a weasel from its anal sacs when threatened. Also used for a stink bomb or similar prank item.

• いたずらで最さい後ごっ屁ぺを教きょう室しつに持もち込こんだ。

  He brought a stink bomb into the classroom as a prank.

• イタチは敵てきに襲おそわれると最さい後ごっ屁ぺを放はなつ。

  When attacked by an enemy, a weasel releases a foul odor.

noun

last-ditch effort; final desperate move

Idiomatic use: a final, often desperate or petty, tactic employed when one is cornered or about to lose. Carries a nuance of a weak or spiteful parting shot.

• 彼かれは辞やめる間ま際ぎわに最さい後ごっ屁ぺとして会かい社しゃの悪わる口ぐちを言いいふらした。

  As a final desperate act, he spread bad rumors about the company right before quitting.

• 交こう渉しょうが決けつ裂れつした相あい手てが最さい後ごっ屁ぺに法ほう的てき手しゅ段だんをちらつかせた。

  The other party, after the negotiations broke down, threatened legal action as a last-ditch effort.