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LEWIS Jetta's last-quarter goal celebration against West Coast - in which he reprised the indigenous war dance carried out by Adam Goodes earlier in the year - was done in support of his great mentor, according to Jetta's coach John Longmire.

Goodes was booed every time he gathered possession in the Swans' loss to the Eagles at Domain Stadium, just as he had been in most matches since he performed the dance against Carlton in May.

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Jetta, who was born and raised in Western Australia, kicked a goal in the last quarter and immediately turned to the crowd and performed a similar dance. 

The dance finished with Jetta pretending to throw a spear at the crowd. 

Longmire said Jetta was frustrated and didn't think Goodes deserved to be booed.

"He (Jetta) wanted to celebrate the goal and he wanted to stick up for a mate,” Longmire said. 

"I think he was upset. Well, I know he was upset. I spoke to him after the game and he was upset at the booing. 

"He has had enough of it and he is obviously pretty close to Goodesy and he celebrated the goal and that's how he acted."

WATCH: John Longmire's full post-match media conference

Longmire said he didn't know whether Jetta had spoken to Goodes about the dance, either during the game or afterwards. 

"We are dealing with it, as far as not focusing on it too much. But clearly Lewis is really close with Adam. They have got a pretty strong relationship, as you would imagine," he said 

"And Lewis is a young kid who has come to Sydney and Goodesy has been such a powerful figure for him and he was reacting and trying to show his support for a mate of his."

West Coast coach Adam Simpson said he was surprised the home crowd had booed Goodes.

"I didn't know what was going on there," Simpson said.

"There were a couple of times I heard some booing and thought, 'What was that?' I was sort of hoping we would be better than that.

"I'm sure it's the minority, and for the most part we do respect Adam and who he stands for and what he does."

Simpson said he had no problem with Jetta's celebration.

Eagles veteran Xavier Ellis said the booing of Goodes was "unwarranted".

"I got the chance to play on him when I was a kid and it was one of the highlights of my career, following Adam Goodes around," he said.

"I think it's unfortunate and I definitely don't support it … We've got a fantastic crowd, fantastic supporters. But every week Goodes is playing he gets booed, which I think it's a bit unfortunate."