STEVE Johnson's young teammates made sure he had no trouble with the words to Greater Western Sydney's team song after its upset win over his former club Geelong.

The veteran had his first chance to belt it out in the Manuka Oval dressing rooms on Sunday following the 13-point win.

He said it came out naturally, having been forced by teammates to recite it repeatedly as punishment at a pre-season camp.

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"Now my four-year-old boy sings it around the house all the time," Jonhson said.

Johnson tried to keep the build-up to Sunday's game, his second in GWS colours after being let go by the Cats at the end of last season, as normal as possible but admitted he felt strange.

"I'm really comfortable that I'm a GWS Giants player now, but then the Geelong team song comes on and you get some mixed feelings," he said.

"It probably took me a quarter to work into the match. But once you get out on the field, you cop a couple of hits, you get a couple of kicks and it was just another game of footy."

He said there were a few barbs thrown around but nothing sinister.

"I guess when you're winning they don't have much to say ... but most of the sledging's about just having a laugh."

Johnson booted two goals and had 23 disposals in Sunday's big win.

It was an improvement on his first outing against Melbourne, which drew plenty of criticism.

He revealed post-match he had been suffering from tonsilitis ahead of the round-one clash but is on the mend.

"Fitness wise I'm going really well," he said.

"Obviously last week I was pretty crook leading into the Melbourne loss and I battled through that game. But I think I'm going to get better and better as the games go on."

Steve Johnson celebrates after the Giants' win. Picture: AFL Media