What started out as an elementary science project soon turned into a YouTube channel that now has over 2.5 million subscribers and over 1 billion views. Daniel Markham and his son Lincoln have achieved YouTube fame by cutting things open to see what's inside.
This week, they cut open a porta potty and then teamed up with LDS prankster Stuart Edge to pull a hilarious prank. Check it out!
And for more recent "What's Inside" episodes, check out what's inside a Jack-in-the-box and a stun gun!