Plumber

In South African football, the term "plumber" is a derogatory slang used to describe a coach, often a foreign one, perceived as underperforming or lacking the intellectual or tactical acumen to succeed in the sport. It implies a coach is more suited to a trade like plumbing than managing a football team.

I see Orlando Pirates just hired a plumber to replace Riveiro.

Piss pipe

A term that means a penis or dick.

I'll be back, gotta go drain the piss pipe.

Umuntu wesifazane

A snake in human form,could also be define as devil herself.

Umuntu wesifaza utsandza imali.

Taxi Maths

This is the job of the person taking the front sit in the taxi, i.e counting money and providing change.

He was moered by taxi maths

Ijaja

Ijaja is a widely used South African slang term to refer to God.

I don't care what you say, ijaja is my witness.

Nyisa

Show you flames or to literally make you shit yourself.

Mjolo will nyisa you. 

Jola

This depends on the context. Jola can be someone's clan name if you are Xhosa. 

It can also mean dating, see ukujola or mjolo.

NdinguJola, Mphankomo...

My friend

This is a term that refers to the Somali or Pakistani shop owners in South Africa. This term started when these shop owners first arrived in South Africa and they referred to everyone as "My friend". The name was then subsequently given to them.

1. Child: Hi, my friend. How much are your sweets?
My friend: It's 2 bob for one sweet, my friend.

2. No one:
Pakistani shop owner: My friend I am not your friend, my friend.

Liyabona

Seeing

Liyabona iso lika thixo

Mize

To mize is to overlook/ignore something or someone intentionally.

Girls will mize you when you are broke!

Gintsa

Gintsa or ginsa is a South African term for a thug, mostly those who hijack cars.

She is dating a gintsa hence she has so much money now.