Definition

To verbally roast someone by taking the piss out of their life, family, home, or social situation—essentially a freestyle insult battle focused on humorous mockery rather than genuine malice.

Example Usage

My friends started cussing me about my old car until I clapped back twice as hard.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=cuss&defid=59846)