"talk dirty" in Chinese (Simplified)
说下流话说污言秽语
Definition
用性或粗俗的语言，通常是为了激起他人或开玩笑。“说下流话”指的是讲明示、挑逗或带有性暗示的话。
Usage Notes (Chinese (Simplified))
属于非正式、成人语境。多指与性有关的挑逗言语，而非一般脏话。适合双方同意的私密场合，不宜在正式或公共场合使用。
Examples
He likes to talk dirty to make her laugh.
他喜欢**说下流话**逗她笑。
Some people feel shy when asked to talk dirty.
有些人被要求**说下流话**时会害羞。
She didn't want to talk dirty over the phone.
她不想在电话里**说下流话**。
He joked, "Can you talk dirty to me in French?"
他开玩笑说：“你能用法语**说下流话**吗？”
It took her a while to feel comfortable enough to talk dirty.
她过了一阵子才敢自在地**说下流话**。
Some couples talk dirty to keep things exciting.
有些情侣会**说下流话**来增添情趣。