umadbro 

Phrase commonly used by internet trolls when the slightest bit of anger or rage is detected (Much like sharks catching the smell of blood). Is known to drive even the sanest person to boiling rage.

Troll: Why do they call it an Xbox 360? Because when you see it you do a 360 degree turn and walk away
Noob: 360 means you face back at it, noob.
Troll: no it dont lul
Noob: wtf yes it does go back to 3rd grade
Troll: umadbro?
Noob: FFFFFFFFFFFFFFFFFUUUUUUUUUUUUUUUUUU

umadbro by Rayge April 14, 2010

Umadbro 

Usually used when referencing someone who is extremely angry in a post or online game chat area.

Calm down, umadbro?

Umadbro by Saavix April 16, 2011

umadbro 

A phrase previously used by trolls, but now used by 12 year old's trying to be cool.

Was used on the image board 4chan.

But now spread around Youtube and Runescape by fucking conformists. Thus making this phrase the most annoying piece of shit ever to come onto the internets.

Seriously, it's even worse than 'coolstorybro'

Jim: You're an ass hole

12y.oconformist: "umadbro"

Mature people: Fucking egg in a bun.

umadbro by Vope March 14, 2011

usadbro 

Poking fun at a bro when they are sad; used humorously or maliciously.

John: My gf of 3 years just broke up with me... *crying*
Bill: usadbro?

usadbro by HackNSlash September 28, 2011

Umad bro? 

A great way to make a mad bro even madder. Used when anger is obvious, to trigger rage for personal amusement.

Random Drunk Guy: Who the f**k do you think you are dancing with my girl
Awesome Guy: Umad bro?
Random Drunk Guy: IMMA F**KN ...

Umad bro? by Makro3922 November 20, 2010

umadbob 

Bob is mad, perturbed, angry, or salacious.

Bob: fucking shit!
Joe: umadbob

umadbob by Bobbbb1b February 12, 2013

Umad bro 

When Your friend starts hating on you, and you commonly say ''Umad bro?"

When a friend gets jealous of you its obvious but you say umad bro.

Umad bro by GWS Gang December 15, 2011