A passing reporter caught part of the incident on camera as he confronted four women who were pelting food at the so-called cheating boyfriend.
James Branson asked the women whether the punishment had gone too far.
In the footage, one woman can be heard saying: "If you think that something like this... is over the top, why aren't you trying to challenge all the f****ed up things that's going on all the time that men perpetuate to women all the time?
"This is not even that bad."
Although it is unknown whether the incident was a prank, the man insisted that he had not been faithful to his partner.
"This is legitimate, it's not a statement, it's not art," he said.
A photo which was posted on Twitter also showed the man wearing the sandwich board sign with a carton of eggs placed in front of him.
- Daily Mail