Actually I use this in one particular case: in Android there is an event callback "onActivityResult" and it's first parameter is integer. In all demos online you see officially looking name like SDCARD_WRITE_PERMISSION and when noobs copy paste it and try to compile it they can't find in which library it is defined, so when in demo code I use BANANA it's little bit more obvious that they have to define it yourself. But MY_SDCARD_WRITE_PERMISSION also works.
Banana makes it obvious that it's not official and on which two places it is connected together.
A legitimately very talented developer that I worked with showed me some of his first code at the company that contained `function post_document_load_do_shit` and `var turd`