It took the perfect recipe of a quiet crowd, peer pressure and a bit of Dutch courage for Jacob Swierc to leap onto the turf at a Rugby World Cup game between Namibia and Romania.

Mr Swierc's bare-bottomed bravery observed by about 15,000 Launceston punters may have only lasted a moment, but that moment stands as a Launceston sporting legend.

Now, 17 years later, Mr Swierc has reflected on streaking during that game, and how it ended up changing his life.

Having spent the week undertaking a tour guide course at Cradle Mountain, Mr Swierc and his mates had no idea of the Rugby Union game at York Park.

"We were having a few quiet ones at the Saloon Bar and these people asked if we knew about this rugby game," he said.

Mr Swierc and his mates ended up being offered free tickets from a stranger at the Saloon.

"We didn't have anything else to do, so we decided to go to the game," he said.

He said he only remembered glimpses from the streak itself, most notably the excitement from the crowd when he took to the field in the buff.

"The game was just so boring, I wasn't a rugby fan and that was the reason I just jumped out there: because there was just not much happening for an atmosphere," he said.

"I remember thinking 'lets just jump out here and do this' and then hearing that roar [from the crowd], then when I hit the deck and security guards tried to get me ... hearing that roar again.

"And then as I was being dragged off the field seeing thousands of people looking and laughing at me and getting cheered."

While Mr Swierc said he had security out-matched by way of fitness, it was his attempt at some on-field nude gymnastics that was his undoing.

"I was fitter than the security guards and I sort of ran around them and didn't worry about them like it was a joke," he said.

"It wasn't until I decided to do a cartwheel ... then I hit the floor and then they jumped me.

"I was like 'no worries guys' and went with it, I didn't try to get away from them."

As Mr Swierc was taken off the field, one crowd member attempted to take his necklace as a souvenir - he ended up gifting it to them.

But Mr Swierc's night didn't end there.

After an interview with police he was taken home, determined to still "hit the town" with his mates.

"When the police met me they were all in good spirits," Mr Swierc said.

"I got back home to my house and my family had absolutely no idea what had happened because they weren't even watching.

"When they saw me wearing nothing but a sheet they were a bit suspicious."

As he hit the town, Mr Swierc was greeted by revellers as a hero.

"I was so keen to go back on the town, I got my little brother to get my clothes and he drove me back out," he said.

"Everyone I met was laughing and carrying on, there was so much energy around."

Mr Swierc's mates had even started a pool in his shoes that game-goers had been donating to.

"That was when I found out I had a $5000 fine over my head, I thought 'oh god'," he said.

"Turns out they [his mates] had done a bit of a walk-around to pay for the fine."

A lawyer offered to take up Mr Swierc's case.

"They argued that it [streaking] was the highlight of what was otherwise a dull and boring game of rugby," Mr Swierc said

"I did it at halftime so it didn't interfere with the game, they didn't bring on halftime entertainment so therefore I provided it."

At the time, there was no specific law around streaking during a sporting match.

"By a technicality, they got me on a trespassing type of charge and I just had to do some community service," he said.

Mr Swierc gave the $1300 raised from the 'shoe-pool' and other donations to charity.

"It all just turned into a wicked story that ended up helping everyone ... it was just all fun," he said.

From then, Mr Sweirc's life changed dramatically.

He started doing radio, and even received a modelling offer from a local agency who had seen his rather revealing audition.

"It just sort of didn't stop for about two weeks, there was so much going on," he said.

Mr Swierc's newfound modelling career landed him a prominent gig in Melbourne.

"Before I knew it, I was working in celebrity clubs in Melbourne ... I dated a celebrity briefly for a while," he said.

From modelling shoots with cars and jets, to dancing with former Miss Universe Jennifer Hawkins, Mr Swierc's life flourished.

He even appeared on 2005 reality TV program Shopping For Love where contestants would shop for their mystery dates based on their wardrobes.

"It [streaking] really changed my life - I was just going to be this tour guide in Tassie and then I ended up being this completely different person who became quite successful," he said.

Now Mr Swierc, in his late 30s, lives in a Melbourne townhouse with his wife Edwina and two sons Edward and Joshua.

He said if it wasn't for the spur-of-the-moment stunt, his life would not have been what it is today.

"If I didn't do streak, all those things wouldn't have happened," he said.