Sam floated on the surface of the water, trying to look unappetizing to whatever creatures might be swimming beneath him.
This was a freshwater lake so odds were against anything big and toothy hanging around. All he had to do was wait until Dean picked him up. No sweat.
Problem was, he'd seen Jaws as a kid, so his lizard brain wasn't really on board with 'No Sweat'.
Lizard Brain wanted a harpoon, a shotgun. It wanted freaking Flipper to haul him back to shore.
But mostly? Lizard Brain wanted Dean to stop getting Sam into this shit.