obby

In Roblox, a obstacle course.
In Minecraft, obby is short for obsidian, commonly used on faction servers.

Roblox:

Player1: Hey kid, do you want to play a obby?

Noob: N0 thx m8 i b4d at 0🅱🅱ys xD lit saveage famm

Minecraft:

Player1: Anybody selling some obby? I need to build a new base.

Player2: I'll sell ya a stack of obby for 50,000.

by LitBot May 7, 2018

obby

Short for obstacle course. Often used on the website "ROBLOX".

lets got to that obby

by anotherusername1111 February 13, 2010

obby

For Roblox: Obstacle course

You: Hey wanna go to the easiest obby?
Noob: What's an obby?

by Octus The Robot May 24, 2011

obby

Obby= o bby= oh baby.
Pronounced: aw bee.

See:oh baby,babeh.

Guy: *smacks ass*
Girl: obby!

by Jay :3 June 23, 2008

obby

Obsidian in the game minecraft

Hey im gonna go mine obby for our big grief on infinium

by SnowballGaming November 16, 2011

Obby

A klepto thief who uses piss vapour to distract you from when he steals shit.

You: Obby, you smell like piss. Hey! Where the heck is my black marker?

by Bahati September 14, 2007

Obby

Slang for dickhead, loser, idiot.

Man, that skank is acting obby-ish.

by SlappyMcGee August 28, 2006