Melbourne Heart CEO Scott Munn was involved in an unseemly Twitter altercation with Masterchef star George Calombaris on Saturday night.

Following Melbourne Victory's 5-0 defeat to Wellington Phoenix, Munn Tweeted Calombaris, a huge Victory supporter, with a screengrab of the scoreline from his smartphone, saying "thought you would like this" and "in some cultures 5 is a lucky number".

Calombaris responded to Munn's bizarre taunt, saying, "can't believe ur a CEO of a club and u take the piss out of another. Fish rots from the head down."

@gcalombaris in some cultures 5 is a lucky number — Scott Munn (@scott_munn) January 18, 2014

News_Rich_Media: The Wellington Phoenix have continued their stunning return to form - demolishing Melbourne Victory in just their second win at home all season.

Although Munn's comments could be taken as tongue-in-cheek, it is still surprising to see someone in Munn's position take to social media to taunt celebrity fans of his club's cross-town rivals. Perhaps more so when you consider his own club's recent record of just one win in 19 games.

The club was unavailable for comment when contacted by Fox Sports.