Stung by a Fireworm!

Fireworm - with a name like that, their sting must be pretty serious! ....but what actually causes the burning pain of the sting? On this episode, Mark will determine once and for all whether the intimidating fireworm is truly venomous or just packs an incredibly painful punch. To do so, he'll endure TWO burning stings and a tortuous overnight on a beach in South Florida.