Geelong defender Tom Stewart has played a gag on the media at Cats training this morning.

When leaving Simonds Stadium, Stewart told the waiting reporters that he was leaving training early with a similar illness to Tom Lonergan.

"Gastro, food poisoning ... one or the other, so hope I'll be right," he said.

"I think it's just us two at the moment … bit of quarantine."

Speculation was flying around this morning, with concerns that the club may have an outbreak on their hands.

But it turns out he just made the whole thing up...

Triple M's Mark Stevens has said that Stewart trained fine and his sickness update simply a joke that went over the heads of everyone.