re: What things have you eaten that'd make a billy goat puke?

Not me but he may not be able to eat Swedish fermented herring or Surstrumming. It apparently is so bad you cannot open the can indoors because people will puke.
But, it’s Rambo so yes, he could. Chuck Norris too...

Recently ate some tripe that someone forgot to clean. So a pig’s a-hole.

Ate wild rice and big arse lizards cook in bamboo on a open fire. Was great like frog legs. This was in PI. Sure I ate some cat tail and monkey brains too!

Out jug fishing with a buddy one night, I decided it would be a good idea to cook a chicken liver on top of the coleman gas lantern.

It was around 2AM.
Many beers had been drank.

Was not a good idea.

Hog nuts