Friends Casey Holmes and Polly Powell were charged with assault offences after Holmes posted a video to social media where the two women can be heard laughing at the injuries they allegedly inflicted on Brad Quirk outside Thirroul Railway Station.

In the footage, which was viewed almost 100,000 times on social media, Mr Quirk can be seen looking dazed, with blood on his face, while a female yells at him "that's what I did to you c---" and repeatedly shouted "I'm gonna f--- you up".

The video starts with: "This is pretty random but I f---ed this c--- up because he was looking at me and ... Polly, and it's her 18th so....look how f---ed this c-- is up."

Police will allege Holmes then says "can I just take a photo of your face, look it's bleeding, that's from me. Look how dumb you are c--t. Don't fight me."

The video appears to show Holmes further harassing Mr Quirk and repeatedly telling him "you're doing down, you're going down" and "touch me and I'll f--k you up" as she continues filming the encounter.

Holmes is facing charges of affray and assault occasioning actual bodily harm, while Powell is facing a single count each of affray and common assault.

Both women's cases was mentioned by a lawyer in Wollongong Local Court on Tuesday, where pleas of not guilty were entered to all four charges.

The cases will return to court in April, however any hearing is unlikely to be held until the middle of the year.

Both Holmes and Powell remain on conditional bail.