idiom · to pervert the law or distort facts by playing with legal phraseology

这些贪官污吏舞文弄墨，玩弄法律于股掌之间。

idiom · to display one's facility with words or to show off one's literary skills

他平日里最喜欢舞文弄墨，写点诗词向朋友炫耀。