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Find out what lurks inside a mannequin

Watch this creepy video to see what happens when you crack open a display mannequin. Sadly, it's not full of plastic organs.

When you go clothes shopping, do you ever find yourself staring into a mannequin's eyes and wondering what's inside?

The father and son who host YouTube series "What's Inside?" did, so they bought a male mannequin to cut open.

The "What's Inside?" web series -- which boasts more than 2.8 million subscribers -- is all about satisfying the public's curiosity about what's inside unusual objects like a rattlesnake's rattle, a meteorite, a lava lamp, an Etch A Sketch toy, a bowling pin and a stun gun, to name a few items.

"This channel started with a second-grade school project to see what was inside sports balls," they say on their YouTube page. "We cut things open so you don't have to."

The videos go viral quickly, reaching anywhere from 2 million to 50 million views.

In their latest offering, posted Sunday, Dan Markham and young son Lincoln cut open a male mannequin using various power tools.

"It's just plastic fiberglass-type material that they put together," Dan says in the video, "and they patch it with glue and this fiberglass plastic material until they get it the way they want it and then it hardens up. And there you go, you've got your mold of a mannequin."

Watch the video to see how much fun a father and son can have breaking apart a mannequin in the name of science.