Creator of the YouTube channel What's Inside? who explores what is inside everyday objects after cutting them open. The most viewed video on his channel would become "What's Inside the YouTube Silver Play Button," earning close to 10 million views in just 3 months.
His YouTube channel was created under his son Lincoln Markham's name in May of 2008, but the first What's Inside? video was posted in January of 2014. Said video explored what was inside of a baseball.
Some of his other more popular items he split open include a wasp nest, a bowling ball, a giant jawbreaker and a grenade. He posted a photo of the Rivian truck on his Instagram in September of 2021.
It was his son Lincoln's second grade science project that inspired his YouTube channel. Lincoln wanted to know what was inside different sports balls. He and his wife Leslie have three children: Lincoln, Claire, and London.