Need an easy way to gross yourself out? Watch this video that describes six different parasites by Asap Science. You have worms that create a nest around your butt hole, parasites that take over the tongue of a fish, ants that can become zombies and a whole lotta other scariness. What's least comforting is how unavoidable it all seems. The littlest things can eventually be the most damaging. [AsapSCIENCE]