Ten Australian players were stuck in the hotel elevator at Crown Perth for 30 minutes on their way back from a team dinner.
The players posted photos of the incident on social media.
Selwood, the Australian captain, said it was a humorous half-hour.
"It was actually good for team bonding if anything," he said.
"It was just after dinner last night and we probably weighed a little bit too much.
"But it is our off-season at the moment, so maybe we could put that down to it."
No fear in Irish eyes
Selwood joined Australia's coach Alastair Clarkson and Ireland's captain Michael Murphy and coach Paul Earley for a pre-match press conference on Friday.
The one-off test at Patersons Stadium on Saturday night is almost a sell-out, with more than 40,000 expected to attend.
Clarkson said it was great for the future of the International Rules series to have such support.
"It makes it worthwhile, doesn't it?" he said.
"It is only a one-test series and we want it to be more than that. We want to reinvigorate the series so that we get an opportunity to travel abroad again next year.
"To get 40,000 people, it's why the AFL selected Perth for the venue for this Test because they knew the people of Perth would support this game."
Clarkson believes the selection of an All Australian team is critical to the concept's success in the future.
He also praised veterans Dustin Fletcher and Brent Harvey for their participation in the series.
"I think it gives it instant credibility," Clarkson said.
"There's a genuine presence. Dustin Fletcher and Boomer Harvey, both those guys are probably going to pass 400 games of senior AFL football.
"There's only been two other guys in the history of our game that have done that. Just having those guys who have played not only a lot of International Rules but also a lot of Australian Rules football, that speaks volumes for the concept."
Earley, the Irish coach who played one VFL game for Melbourne in 1984 before returning the Gaelic game, said his side was not intimidated by the quality of the Australian side.
"I think this series was always about Ireland's best playing against Australia's best," he said.
"That's part of the challenge that the guys look forward to, testing themselves against the best that Australia has out there and this year.
"Obviously with the All Australian team, it is a great challenge and something the guys are looking forward to and are very excited about."
Selwood joined Australia's coach Alastair Clarkson and Ireland's captain Michael Murphy and coach Paul Earley for a pre-match press conference on Friday.
The one-off test at Patersons Stadium on Saturday night is almost a sell-out, with more than 40,000 expected to attend.
"It makes it worthwhile, doesn't it?" he said.
"It is only a one-test series and we want it to be more than that. We want to reinvigorate the series so that we get an opportunity to travel abroad again next year.
"To get 40,000 people, it's why the AFL selected Perth for the venue for this Test because they knew the people of Perth would support this game."
Clarkson believes the selection of an All Australian team is critical to the concept's success in the future.
He also praised veterans Dustin Fletcher and Brent Harvey for their participation in the series.
"I think it gives it instant credibility," Clarkson said.
"There's a genuine presence. Dustin Fletcher and Boomer Harvey, both those guys are probably going to pass 400 games of senior AFL football.
"There's only been two other guys in the history of our game that have done that. Just having those guys who have played not only a lot of International Rules but also a lot of Australian Rules football, that speaks volumes for the concept."
Earley, the Irish coach who played one VFL game for Melbourne in 1984 before returning the Gaelic game, said his side was not intimidated by the quality of the Australian side.
"I think this series was always about Ireland's best playing against Australia's best," he said.
"That's part of the challenge that the guys look forward to, testing themselves against the best that Australia has out there and this year.
"Obviously with the All Australian team, it is a great challenge and something the guys are looking forward to and are very excited about."
