Despite his misgivings, Shelton took the shot of sea urchin like a pro, while Fallon embarrassingly struggled. 

"C'mon, you don't want to be that guy," the singer taunted. 

When they arrived at the last mystery course, the host assured Blake it was going to blow his mind.

Drumroll, please. It was a....Big Mac. 

"You earned it, buddy," Fallon toasted. "Two more rice wines!"