trash(говорить гадости / condemn as worthless denghu); talk shit(Well, yes, they're talking shit behind each others backs and still hanging out together. After all, they are besties – Ну да, сначала они засирают друг друга, за спиной, а потом вместе же и тусуются. Лучшие подруги, как никакTaras)
shit all over(ybelov); badmouth(HomerS); shit-mouth(The abrasive politician was notorious for using his platform to shit-mouth his opponents, often with personal attacks and inflammatory rhetoricTaras)