Moer

To beat someone to a pulp.

Can also be a swear word in Afrikaans

I will moer you.

Mdidi

A vulgar or explicit way to say butt or ass.

Do not say this to anyone or you will be moered. 

You are mad, mdidi wakho. 

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...

Ukujola

Is to date someone or being in a relationship.

When did you start ukujola now?

Mjolo

Mjolo basically means dating. It's derived from ukujola which means to date. Therefore mjolo is the act of dating (ukujola).

Other people may spell it as mojolo

Mjolo will nyisa you. 

Haibo

An expression of surprise or shock (basically means wow), mostly used by Xhosa speaking people. It can also be spelt as Hayibo.

Haibo, is this really happening?

Ayobaness

Another term for ayoba, a catch phrase that was popular in the Blackberry and YoTv days.

That's so ayoba.
Ayobaness.

Meneer Magongwa

A situation where you don't have money and you have no means of getting it.

I'm so Meneer Magongwa these days.

Ayoba

Ayoba is a South African slang, which means something “cool”, “okay”, or “all right”. It was popular before the social media age but its use has declined.

Girl 1: We should go to the mall tomorrow.
Girl 2: Ayoba

Lockdowniversary

Celebrated every year on the 27th of March. The anniversary of the South African Covid-19 lockdown that was supposed to last only 21 days.

Happy lockdowniversary to everyone who is celebrating.