他们在更衣室里互相说坏话，抱怨对方的表现。

They were ___shit-talking each other in the locker room, complaining about each other's performance.

比赛前，两个拳击手互相说垃圾话试图激怒对方。

Before the fight, the two boxers were ___shit-talking each other to try to provoke one another.