to this:
Chunga Changa! You forgot to surrender!
Strangely enough, the guy realized that they were addressing him.
When we were in Zanzibar, we discovered that Chunga Changa is the name of a local orange, green and sour. In translation, it means a young, vigorous, full of strength. So if the Negro was from those corners and spoke Swahili, then he understood the address quite well and probably even perceived it as a compliment.)))