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Originating from the italian word Ambrosini.

Generally used when someone backs out of something at the last minute. Sometimes used when complaining about previous arrangements made and then had plans changed.

To commit a "jambro" you must make some sort of complaint and then retract from participation.

Act of: leaving a man behind. To be in a "jam", "bro"

Related to: Janston and Sandy Vagina
1: Committing a Jambro:
"Hey, you are gonna play catcher now, I'm going to play second base."
"Hey man! NO WAY!!! I didn't spend $7 at the batting cages for nothing, I'm out of here man, play without me!"
"Oh man, don't pull a jambro".

2: Using Jambro:
"Come on man, we need one more player on our team! We are one short!"
"Naw man, I don't like to play football, I am going to go play WoW"
"Aw, don't pull a Jambro"

Also see Sandy Vagina
Jambro by Janston March 15, 2009
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Jam: 2 or more musicians making music together but not an official band.

Bro: a buddy, a friend, a homie.

Jambro: a buddy you jam with.
That girl's my jambro! we play together almost every other day.

Respect, Jambro! you killed it on the stage tonight!
Jambro by schazaib March 30, 2017
Related Words

rice-a-roni jabroni

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You're a fake, a phony, a rice-a-roni jabroni
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jambloat 

A jambloat is something that jams. Often used for programs that fail to compile, especially used when coding python. when a language is susceptibel to hidden bugs it is called jambloatable, such as c++.
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G-Lit Jabronie 

The opposite of LEGIT. A total fucking bum who used to be cool. Someone who you run from in public.

A low-level grifter whose main objective is to snipe cigarettes off the sidewalk.
"That guy was LEGIT in high school, now he's just a G-LIT Jabronie!"
G-Lit Jabronie by k-Nice March 24, 2017
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