Le-goa is derived from the Boer-trekkers when shouting and yelling at the oxen which drawn the ox-wagons.
Almost all of the African languages consists of word-classes, eg class for (singular/plural): people (mo/ba); things (le/ma) etc.
Le: the class for things
goa: shout, yell, noise
meaning: thing-noise = the thing that make a noise.
Many and almost all of these cultures outgrown their language-meanings and therefore only a handful will use these word(s) for derogation purposes.
Angry response: samaya legoa! = go away trash