Kabo yellow
Kabo yellow is a nickname for South African soccer team Mamelodi Sundowns. Their home kit is yellow so I am guessing that's where the name comes from.
Q: Which team do you support?
A: Kabo yellow
Kiss Madolo
This is what educated people call "knock knees". When a person is standing and his/her knees (madolo) are touching (kissing).
It can also be called a kiss kiss.
He can't run because he has kiss madolo.
Kwerekwere
A derogatory term for foreigners in South African slang, particularly foreigners from African countries.
Can also be spelt as Kwirikwiri or kwarakwara.
Stop calling foreign people kwerekwere!