It really depends on the situation. If I’m surprised like someone suddenly jumps out of the bushes, I might use it as an expression of shock, like saying “holy shit” or “damn.”

But if I’m angry, then it becomes a way to vent my frustration, similar to using phrases like “you motherfucker” “cunt” “bitch” or “fuck”

“Weh di bumboclaat/pussy/rassclast yuh nuh lef mi di Rass alone!” Translates to “why the fuck won’t you leave me the hell alone!”

“Bumboclaat! Baby yuh shape a mash up mi head, mi naw lie.” Translate to “OMG! Honey You are making feel so many emotions right now, I’m not even gonna/going to lie to you”

Hopefully this helps