I think he was making fun of his scrawniness

You dare question your machete-wielding god?

Fun fact - it's also a relatively strong laxative, so if you drink more than two coconuts in a day you'll probably get the runs. Your god is rather cruel. :(

What is it isotonic to? Blood? that's pretty fun.

It's because the dad is the real-life version of Harrison Ford's character in The Mosquito Coast and he's dragging his family into catastrophe with his arrogant hubris.

That's not his coconut and those aren't his kids.

It's not his machete either, but you don't see that stopping him.

He has one video about machete-ing the head of each person he has killed.