By day Mandy Flinn, 24, is a demure chartered accountant. But by night, she dons thigh-high, eight-inch studded boots, teases her long red mane and answers to the name Scarlett O’Terror.

Then she struts down to Bar 751 on Queen Street West and goes head-to-head and arm-to-arm with other brave broads in the Women’s Arm Wrestling for Charity competition.

“I’ve won twice,” says Flinn, who adopts her sassy persona specifically for the charity tournaments, which are held every two to three months and attract about 250 spectators. The raucous show of female strength is the brainchild of musician Scotty B. Goode and promoter Steve Rock, and will take over 751 this coming Saturday. 

“We were hanging at Ted’s Collision, and these women at the next table were arm wrestling,” says Goode. “We thought, imagine if this was a night?” And soon it was, complete with a mouthy host (Goode), shredding rock ‘n’ roll theme music, 16 female competitors – each with a cheering entourage – and some of the most outrageous costumes since ‘80s WWF.

Rock says he’s heard of ladies wrestling competitions in the U.S., but nothing quite like this. “Theirs will be from 7 to 9 in a diner with florescent lighting somewhere in North Carolina,” says Rock.

And while 751′s $10 pitchers help make the night a party, it’s important to remember that it’s all in the name of a good cause. Proceeds from the evening (it’s $5 to watch, $2 to compete) go to a different charity each event. This week it’s Plan Canada’s BecauseIamagirl.ca campaign, in support of girls in the developing world.

“Use your muscle to help other women find their strength,” says Rock.

Thinking of competing? While there is a stable of regular and spectacularly costumed regulars, walk-ins are always welcome, provided there’s space.

If you can’t make this weekend’s showdown, there’s another event planned for April 28. Women’s Arm Wrestling for Charity has grown so popular that the gang is taking the show on the road, with competitions planned for Montreal and New York this spring.

For more information, visit Toronto-charities.ca/womens-arm-wrestling-charity.