Mad Oh 

(Originating from the streets of Lagos, Nigeria) An expression of surprise, shock or astonishment often caused by something unexpected or mind blowing. It can be used as an adjective in some cases.

Mad oh is very dynamic hence, it is also a valid /sarcastic reply to any statement whatsoever. In cases where you are tired of a conversation, mad oh will do a lot of good because of its conversation terminating abilities.

You got A in that test? Mad Oh!

This movie is gonna be Mad Oh!

Boy: I think I'm in love with you
Girl: Mad Oh!

Mad Oh by Kadet † December 27, 2019

Mad oh 

Coined by George Fakunle, it expresses amusement or excitement often caused by a mind blowing event or occurrence.

Bro I’m about to link that girl

Bro : ahn mad oh

Mad oh by Michigan bulldog December 27, 2019

mad oh!

Mad oh! is local man's way of expressing "Oh, Damn!" It is used to express pleasant surprise and amusement.

So her puffed up chest is 95 per cent bra work??? Mad oh!

mad oh! by YouCrane January 22, 2020

Go mad on the lock 

Go mad on the lock - Acquiring a large sum of money in a short period of time.

(Lock suggesting bank vault door lock and going mad meaning breaking and entering.)

Adam: Hey, do you mind paying for my chicken nuggets?

Ben: Yeah man, don't worry, I'm about to go mad on the lock, I'll pay for your entire meal man, anything you want.

Go mad on the lock by rideF September 5, 2019

mad out of it 

Under the influence of drugs, esp ecstasy

I took 3 e's last night and I was mad out of it

mad out of it by Aldizzle August 22, 2006

Mad oo 

This is a term used by Nigerians to express surprise or excitement

guy1:ASUU has called off the strike
guy2:Mad oo!

Mad oo by Sarnou March 28, 2020

Mad On The Internet 

When someone gets upset on the internet, they are "mad on the internet." This is similar to being mad in real life, but never justifiable, and will always make one look particularly bad or stupid.

People are always getting mad on the internet at me just because I'm never wrong and know how to keep my cool.

Mad On The Internet by Fungusmonk July 25, 2011