A missionary¹ who had spent years showing a tribe of natives how to farm and build things to be self-sufficient gets word that he is to return home.

He realizes that the one thing he never taught the natives was how to speak English, so he takes the chief and starts walking in the forest.

He points to a tree and says to the chief, "This is a tree."

The chief looks at the tree and grunts², "Tree."

The missionary is pleased with the response. They walk a little farther and the padre points to a rock and says, "This is a rock."

Hearing this, the chief looks and grunts, "Rock."

The padre is really getting enthusiastic about the results when he hears a rustling³ in the bushes.

As he peeks⁴ over the top, he sees a couple in the midst of heavy romantic activity.

The padre is really flustered⁵ and quickly responds, "Riding a bike."

The chief looks at the couple briefly⁶, pulls out his blow gun and kills them.

The padre goes ballistic and yells at the chief that he has spent years teaching the tribe how to be civilized⁷ and kind to each other, so how could he just kill these people in cold blood that way?

The chief replied, "My bike."