I'll never hear the end of it.

（いつまでもブツブツ言われるだろうな。）
　オンライン英会話「Englishtown」のビデオ教材に出てきた表現。友達数人とスカイダイビングをやろう、と誘われてるけど本音ではやりたくない男の子の独白。メンバーのうちの一人は、僕が行くならやる、くらいのスタンスだから、僕がいかなかったら面倒くさいことになるだろうな、みたいな文脈。

• もうこのままで決まり文句な表現。「終わりを聞くことがない」っていうのは、ここでは〈文句の〉終わりを、ってこと。英英を見ると、文句だけじゃなく、自慢話とかも含めた、聞きたくない話全般を指すみたい。（to have to listen for a long time to talk about something embarrassing or annoying／something that you say which means that someone will continue to talk about something they have achieved for a long time and in an annoying way／used to say that someone will keep talking about something for a long time）
  • If she wins you know we'll never hear the end of it.
  • If you don't send your aunt a thank-you letter, you'll never hear the end of it from your mother!
  • If my Mum finds out, I'll never hear the end of it.
  • If we don't get her a dog we'll never hear the end of it.
  • If it turns out that he's right, we'll never hear the end of it.