画像引用：m a r y r o c h e on Twitter: “Today’s Word of the Day is more a phrase of the day. HOIST BY HIS OWN PETARD has come to mean
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７月２１日投稿の添削結果を受け取りました。正しい英文を書くのは難しいことを実感しますがその内添削箇所ゼロとなるように努力したいと思います。

George Bernard Shaw was an intellectual person well known for his harsh criticism and sharp tongue.  A rare incident happened one day that placed him in the situation of “hoist by his own petard”.

The scene was at his home.  He had conceived a contention that male judgment was superior to female judgment.  He wanted to reassure himself of its rightness before making it public, and asked Mrs. Shaw for her support.

“Of course, Dear,” replied Mrs. Shaw, “After all, you married me and I you.”

The first part of Mrs. Shaw’s answer sounded like total support for his contention. But the second part implied that under that contention, he would have to admit that although his marrying Mrs. Shaw was the result of his superior judgment, Mrs. Shaw’s marrying him was the result of a cursory decision based on her poor judgment, that is, he could have been only one of many men for her when they married.  George Bernard Shaw tried to fortify his contention by getting support from Mrs. Shaw, but instead, she pointed out in her ironical way, that such a contention would place himself in an unfavorable situation.