then an expanding insulation foam. i said if you're going to try to scare people, let's try to make him an evil guy. i took down parts of sunglasses and created interesting shapes and embedded them. your menacing look comes from the slanted eye. then the evil grimace with the mouth. it creates a good field of vision. >> a camera mounted inside the chest of the snowman captures reactions up close while a camera placed nearby shoots the scene. [ screaming ] >> the only thing needed to bring the snow man prank to life is someone willing to climb inside and scare the bejesus out of people. for that, he recruited his friend and it doesn't take a lot of convincing.