down-and-dirty
adjective US informal uk/ˌdaʊn.ənˈdɜː.ti/ us/ˌdaʊn.ənˈdɝː.t̬i/
（举止）令人反感的;虚伪的
Down-and-dirty behaviour is not pleasant or honest.
a down-and-dirty political campaign 肮脏虚伪的政治运动
骇人听闻的（桃色事件）
Something that is down-and-dirty is shocking, often because it is connected with sex.
He likes his films down-and-dirty. 他喜欢他那些桃色电影。