In the first picture, the English is reasonably standard, and “Everybody running to the coconut tree” could be an example of an utterance that isn’t technically a sentence, but serves the same purpose in colloquial speech or poetry. Some common shorter examples would include interjections, such as “Hey, you!”. In light of the second image that you found, I would say you’re probably right about it being a reference to a song in a Caribbean variety of English.
It’s interesting to note that while most countries in Central America are Spanish-speaking (except for tiny Belize, formerly “British Honduras”), the entire Caribbean Coast of Central America has a population largely of Jamaican descent, speaking natively a variety of English Creole. They speak Spanish as well (as it’s the official language), and in modern times, many of them have been learning to speak a more standard variety of American English.