Big Cahuna 

God like power. The one who makes the final desicion

He thinks he is the Big Cahuna

Big Cahuna by luis i navarro June 11, 2006

Big Cahuna 

Adam Pender

How can such a fat dick be attached to such a litle man!!

Big Cahuna by 8797 June 9, 2004

Big Cajuna 

The act of being extremely kick ass and just about the most superb thing all around. Can be used to describe either people, or non living things, as well.

Hey look its that kid from 5th period, he's the big cajuna.

Big Cajuna by Kimobobul0us June 3, 2010