9. Tarantula Tunnel (Season 6)
The challenge is terrifying on it’s own—one contestant is stuck in a pit of ice searching for canisters while another is trapped in a tunnel with tarantulas and crickets—but it’s worsened when one of the contestants is so incompetent that he leaves his partner stuck in the tunnel of tarantulas for 17 minutes. His excuse? He was too cold. We’re surprised she didn’t push him in the tarantula tunnel to suffer after she got out. Not only did he deserve it, but also the fear and adrenaline rush certainly would have warmed him up.