Three Wallabies, including teenage sensation James O'Connor, have been fined for engaging in a food fight at their team hotel.

Quade Cooper and Josh Valentine were the others involved in the incident, which required one of the player's rooms to be cleaned at an additional cost.

The ARU was on Sunday tight lipped about the skylarking, only confirming it took place during the Wallabies' just-completed inbound Test series.

"The ARU is extremely disappointed by their behaviour as it does not meet the required standards of a Wallaby," a spokesman said.

The ARU fined all three players and declared the matter closed.

Despite disciplining the trio, the ARU did not deem the offence serious enough to drop O'Connor or Valentine from the bench for Saturday night's 22-6 Test win over France at ANZ Stadium.

O'Connor, 18, and Cooper, just turned 21, have a history of high jinx.

On the eve of their Test debuts against Italy on last year's spring tour, the two backline rookies were seen dodging and weaving traffic as they fired passes to one another on the cobbled streets of Padova.

Their latest act of shenanigans is relatively minor compared to the controversies which have dogged the NRL this season.

The league's latest drama involves Sydney Roosters hooker Jake Friend being investigated by police for allegedly assaulting a woman at a Sydney nightclub on Sunday morning.

Friend, who was banned for two weeks by the NRL and fined $10,000 by his club for a high-range drink driving charge earlier this year, is alleged to have punched a woman at the Tank nightclub in Bridge Lane.

With the Wallabies largely observing a no drinking policy under coach Robbie Deans, the ARU would be hopeful an old-fashioned food fight will be as bad as it gets.

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