Hablar paja
To talk nonsense, lie, or engage in idle chatter. It is used when someone is talking trash about others or just wasting time with empty talk (the word paja literally means straw, suggesting the conversation lacks substance).
I do not like going out with him because he habla mucha paja about others. | She does not pay attention in class because she is hablando paja with her friend.
Automatically translated from Spanish