Charlotte Caslick won't say her name but she will tell you how big she was — because she can still remember the day she had to tackle her.
"I was invited to a camp, I was about 16 and there was a girl there who was just massive," the 21-year-old Queenslander recalls. "She was heavier than my Dad. At least 90 kilograms. I remember coming home and I'm like, 'Nup, I can't do this.' That freaked me out because I thought I had to be just like her."
And now?
Now, five years later, the former touch footy star is considered the best women's rugby sevens player on the planet.
Like several of her teammates in the Australian team, Caslick excelled at touch but received letters in the mail from Australian Rugby Union talent scouts after sevens was included in the Rio Olympics.
For that reason, the World Series champions are known for their attacking brand of play, but Caslick concedes the physicality of her new sport was difficult to fathom.
"I'm not going to lie: I struggled for a while getting my head around running at people as hard as I can, and tackling people running hard at me," she says. "That was the biggest area I had to work on. Hours and hours and hours in a sandpit in Brisbane.
“Just tackling each other, tackling the other girls. The more you do the better you get. I love contact now, it's one of my favourite parts of the game."
So, is she cutting rivals in half whenever they've got the ball?
"Not quite," she smiles. "But I'm not a dead weight."
For the record, she's 65 kilograms.
Australian coach Tim Walsh, who still shakes his head in disbelief that he's about to coach sevens rugby at an Olympics after accepting the job in 2013, remembers the difficulty in transforming the side's touch players into rugby stars.
"Some had never made a tackle before," Walsh says. "The majority hadn't done a drop kick before … I believe contact is 80 per cent desire, 20 per cent technique. The number of tears they had from making their first tackles to now … They really embrace it."
There were no tears from Nicole Beck, 28. She does cut them in half.
Search YouTube for her try-saving tackle on England's Fiona Pocock while playing for Australia at the 2010 World Cup. It evokes memories of Wallaby halfback George Gregan's famous tackle on the All Blacks' Jeff Wilson in 1994.
"Honestly? I was trying not to get palmed off," Beck says, trying to downplay the moment. "Run hard so she wouldn't be able to palm me."
It's been watched nearly half a million times on You Tube.
"I think my dad watched half of those …"
Beck is one of many great stories in this Australian side, which threatens to steal the show in the opening days of these Olympics. Having won the World Series earlier this year, they are considered the tournament favourites in Rio.
In 2011, she gave birth to her daughter, Sophie.
"That nine months off was a real motivator for me," Beck says. "I didn't like not playing my sport. I had a difficult birth with Sophie and I didn't start running again until she was seven months old. But that time off allowed me to get over an ankle injury."
Given the high intensity game the Australians play, she needed to be fully recovered.
"The field stays the same [as regular rugby], but you've got half as many people so aerobic fitness and endurance is everything. There's no rest. Everyone is surprised to hear it's only 14 minutes, but you are running non-stop, high speed metres. It's the most taxing sport I've ever played."
From what moment in the game do the lungs start to burn?
"The first minute," she says. "The way we play, they're burning the whole time."
Emilee Cherry, 23, is a Roma girl who idolises hometown hero Darren Lockyer so much she still had a poster of him on the back of her bedroom door a few years ago.
"I play in the centres, I'm more of a running player than him, but I admired how he was composed in the big moments," she says.
Like Caslick, Cherry was running around with the national touch team when she received her letter from the ARU, prompting her to think about Rio.
"When I started there were girls who were 30-year-olds who had been playing [rugby] for most of their lives," she says. "They gave it to us at the start. Looking back now, I am really thankful that it was a shock. That is something we've learned to love: the contact.
"But we can do things they couldn't do. We taught them our skills from touch, our ball playing, we've shared ideas. Our game has developed from that touch football background. We like to use the ball."
Ellia Green doesn't so much use the ball as run it with Hayne-like devastation.
She fell into the sport when she took her cousin to a sevens camp and then found herself being selected. She had designs on being the 100m in track and field, never in rugby.
In the past year, her profile has soared. She's the most recognisable women's player in the country.
"It's just because I have braids," Green, 23, laughs. "I think our whole team is getting recognised more."
Should Australia cash in on their form this year, starting with Columbia and Fiji in the pool rounds on day one, the USA on day two and then possible gold on day three, the nation will know exactly who they are.
"I get goosebumps with you just saying that," Caslick says. "We want Australia to look at us as one of those teams that everyone wants to follow. Win the hearts of Australia, really."
