Upside-down b 

Upside down b - which if you look at it as a lower case, means p, or methamphetamine. This is a common term used in New Zealand, made famous by Bro'Town.
The letter p is likely to be derived from the main ingredient in methamphetamine, pseudoephedrine.

Eh bro'! I can't believe youse got hooked on upside-down b!

Upside-down b by Rebelmonkeys October 2, 2006

down b 

To give someone a sweet uppercut (in the style of Mortal Kombat.)

Yo, dawg, Plaks is such an asshole; so I gave him a down b and knocked his monkey ass down!

down b by Jeff May 15, 2004

B-Down

Someone or something thats retarded.
This is an alternative word to retarded.

Lydio: did you see that retard over there he’s really retarded
Dalziel: no don't say that thats rude . That guy is B-down.
Lydio : bet

B-Down by Anonymous errors January 23, 2020

up up down down left right left right b a start 

The code for Ninendo's Contra to get 9 lives

The only way to beat Contra is to use the "up up down down left right left right B A start" code

up up down down left right left right b a start by SeeBeeEff July 30, 2008

Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start 

Famous video game cheat code. Originated in Contra, then reappeared in Gradius (1988). All video game fanatics know this code by heart.

Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start.

Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start by Myoga1 February 24, 2004

Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start 

This is actually known as the "Konami Code", as it appeared in pretty much every game they wrote at that period of time.

Don't forget, make the end of it "Select, Start" if you want to play 2 players!

"FUCK, LifeForce is a real bitch. Let's just Konami Code it... and pass that pizza, asshole."

Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start by Binary Jay November 25, 2004

Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start 

1. A popular cheat code.
2. Part of the song "Anyone Else But You" by The Moldy Peaches.

Up, up, down, down, left, right, left, right, B, A, Start. Just because we use cheats doesn't mean we're not smart.

Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start by Amy Renée January 27, 2009