Group World Records  

Maggie J. led 63 kids to thumb wrestle while lying face down.

JK and three of his friends whistled 99 Red Balloons as covered by Goldfinger at once.

Derek Volk lead 25 people from the Scarborough Maine 7th Grade Girls Softball Team and 7th Grade Baseball Team in somersaulting from the pitcher's mound to the home plate. They set the record during their end-of-season party.

Chris R. led 53 people to say "We Love Majors Pizza" at once.

Three members of Support The Melons passed a melon between their legs 23 times in 30 seconds. They set the record to promote breast cancer awareness and raise funds for the American Cancer Society's Making Strides Against Breast Cancer campaign.

107 people, including friends Of Ryelands Park, Lancashire County Council, The Dukes Theaters and community members from the Lancaster District of Ryelands, Skerton and Vale, wore fake mustaches in a conga line led by a Batala Band. They set the record during the "This Side of The River" celebration, a project which aimed to bring arts engagement to some of the City of Lancaster's most deprived areas.

Mel Sampson led 66 people in dancing at once while wearing hoodies. They set the record as part of their #TBT season finale outside 95.9 SunFM in Miramichi, New Brunswick.

Ralf Fambach led 428 people in dancing zumba while wearing dirndl and lederhosen.

Led by Zappos.com CEO Tony Hsieh, 1,577 Zappos employees and friends cut a ribbon snaking through the Zappos headquarters plaza and up to several balcony levels. The record was set during the grand opening of the Zappos Headquarters in Downtown Las Vegas. RecordSetter Founders Dan Rollman and Corey Henderson were present to adjudicate the attempt. Read more about the feat here.

Students, parents, friends and staff of the Mission Hills Christian School performed a total of 1,976 slides in two hours on two inflatable water slides. They set the record to raise funds for the benefit of the school and to bring their community together.

Students, professors, staff and friends of EARTH University illuminated 1,600 Christmas lights for 24 hours using bicycles connected to a generator. They set the record to promote their Make A Gift and Illuminating Dreams campaigns.

590 people from World's Largest Hustle, LLC performed the Hustle dance.

Joseph G. led 338 kids in a Zumba class. The class was organized by Fight Back With Fitness and Relay For Life Bergen Beach, Mill Basin & Marine Park. They set the record to promote cancer prevention through fitness and healthy lifestyle.

Students from Eudora High School created a Sierpinski triangle made of 59,049 pennies. They set the record to raise funds for the March of Dimes, collecting a total of $731.83 during the attempt.

12 members of Victory Gymnastics Academy simultaneously held a handstand for 30 seconds. The record was set during National Gymnastics Day 2013 at Victory Gymnastics Academy in San Diego, California.

93 people from Marshall High School in Marshall, Illinois threw dodgeballs at their school mascot at once. The record was sponsored by Hannig Construction, Inc.