Baptism!
A missionary discovered a tribe of Indians in the Amazon who
had never recorded a baptism, confirmation or marriage.
The bishop soon rectified the situation by baptizing and confirming everyone.
He also married every couple that walked by and desired such.
Later, the tribal chief told the missionary the tribe had never had so much fun.
The missionary asked the chief which part they enjoyed the most.
"The marriage service," the chief said, smiling.
"We all got new wives!"