NSFW VIDEO: This Will Slash Any Dreams You Ever Had About Going Cage Diving With Sharks

If you've always had cage diving on your bucket list, this could have you frantically scrambling for an eraser to rub it out from the list once and for all.

Youtuber Bryan Plummer went shark diving for his first time in Gansbaai, South Africa with his sister and three good friends.

If you're not familiar with the adrenaline-rush experience, tourists are lowered underwater in a cage to watch sharks feeding in their natural habitat.

A meaty piece of bait is thrown away from the cage and, in an ideal situation, the sharks come to feed while tourists can gawk at them.

But this shark had a different idea about how his day was going to go. He totally ignored the bait and rammed straight into the tourists' cage, his head jamming between the bars. A diver who was with the friends acted quick and ducked beneath the gaping shark's mouth to avoid injury.

Phew. Where's that eraser?