Stars of Disney Channel's Stuck in the Middle have become the first to break two of the featured challenges in Guinness World Records' new book, Science & Stuff. 

Nicolas Bechtel, Malachi Barton, and Ariana Greenblatt have earned their first record titles; Most marshmallows caught in the mouth with a home-made catapult in one minute and Most pencils pierced through a water-filled bag in one minute.

After a visit from Science Bob and our official adjudicator on the studio set in Los Angeles, California, the three child actors attempted the records from the Make & Break section in Science & Stuff which were demonstrated by Professor Burnaby Q Orbax and his lab assistant, Sweet Pepper Klopek.

Nicolas and Ariana, who play Lewie Diaz and Daphne Diaz respectively, were excited to try the marshmallow catapult DIY experiment, which involves using household objects to launch the sweet treat at your friend (or enemy!).

Check out the video below to find out how to make it:

With expert advice from Science Bob, Ariana and Nicolas were able to build the perfect catapult to earn their first record.

To get the title, which was for Most marshmallows caught in the mouth with a home-made catapult in one minute, the pair had to stand two metres apart and catch a minimum of four.

It was definitely not an easy challenge, but the pair's practice paid off as they managed to catch 13.

Disney Channel 3

On the other hand, co-star Malachi Barton, who plays Beast Diaz, was interested in anti-leak bag DIY experiment, also from the Make & Break section, which involves piercing pencils through both sides of a bag filled with water without it leaking.

Thankfully Science Bob also gave him a few scientific tips for the record, which was the Most pencils pierced through a water-filled bag in one minute.

When it was finally showtime, Malachi managed a total of 15 pencils, beating the minimum of 11.

The Disney kid stars each received their official Guinness World Records certificate along with a copy of Guinness World Records: Science & Stuff so they can check out more science titles at home.

Disney Channel

As you can see, they were very happy to join the Guinness World Records family and Science Bob was very proud of their hard work.

A post shared by Bob Pflugfelder (@sciencebob) on

Want to try these DIY experiment at home? Download the instructions here. Be sure to get your copy of Science & Stuff to get the latest on the world’s grossest, smelliest, weirdest, and noisiest records!