Vuvuzela
A plastic horn/trumpet that is mostly blown in soccer matches. It produces a loud monotone note. It became very popular in South Africa in the 1990s. A fan of the Kaizer Chiefs named Freddie "Saddam" Maake says that he invented the vuvuzela.
Don't forget your vuvuzela when we go to the stadium.
Yena aya kwini
A Tsonga term that means "Where was he going", mostly used on social media when someone maybe gets hurt when doing something they were not supposed to do in the first place.
Girl 1: She broke up with that Xhosa guy, apparently he was trash.
Girl 2: I told her to stay away from Xhosa people. Yena aya kwini?
Matric Dance
Also known as Matric Farewell - Is when grade 12 (last year of high school) learners have one final formal function, often followed by parties, underage drinking and bad decisions. Each school usually has its own dance and pupils usually come with a date and wear expensive suits and dresses.
Americans would call it prom
I don't know who I am going to take to the Matric Dance.