smack talk

 

Entry from US Dictionary

(also smack talking)

noun

informal
  • insulting speech, especially when intended to irritate or annoy someone: a game like this promotes smack talk

verb

[no object] (smack-talk)
  • use insulting speech, especially to irritate or annoy someone: I’m here to smack-talk with two old college pals (as adjective smack-talking) just another story on smack-talking celebs

Derivatives

smack talker

(also smack-talker) noun