be a hero 

what people advise you not to do during mildly precarious and trivial situations

Guy 1: Hey, can you hand me that flyswatter over there? I gotta take care of this tiny daddy longlegs crawling up the wall here.

Guy 2: Don't be a hero, man

be a hero by Don'tBeAHero May 14, 2010

be a hero 

In the world of online gaming, usually used sarcastically, e.g. when running enthusiastically into a high-risk situation where failure is immanent. Sometimes this can actually help the player's team - for example, if the enemy is distracted by the hero - but it usually is done only for amusement.

There is a famous video of Leroy Jenkins being a hero.

While playing Team Fortress 2, I decided to be a hero. I ran around as a civilian, distracting the other team while my teammates captured the control point.

be a hero by lamgood February 20, 2009

You either die and be a hero or live long enough to see yourself become the villain 

This is quoted from Two-Face of the Dark Knight movie.An interpretation of this quote is that you could stick to your morals,of what's right,to be loyal to a cause,even if it is of your detriment (die and be a hero).Should you contradict your values for your betterment,you may find yourself making the same decisions of the very people you yourself considered corrupt/evil(live long enough to see yourself become a villain.)

Black Mirror(15 million merits)
Before:Main character opposes system of the rich profiting off of working class

After:Main character is hired by rich to host a vlog to rant about systemic oppression,only to be benefiting from the system he once fought against

You either die and be a hero or live long enough to see yourself become the villain

Black Mirror(15 million merits)
Before:Main character opposes system of the rich profiting off of working class

After:Main character is hired by rich to host a vlog to rant about systemic oppression,only to be benefiting from the system he once fought against

You either die and be a hero or live long enough to see yourself become the villain by Smart Patrick October 18, 2022

be a heron 

a person that behaves like a heron

Mandy, have you met the new colleague yet?
How can you be a heron like this?

be a heron by TinderAndy April 24, 2017

sans sheriff 

Lawless use of fonts or typography, with no regard to aesthetics or legibility

I'm putting this CV straight in the bin. Written totally sans sheriff.

sans sheriff by Jamarley July 3, 2019

Breadhead 

Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".

A breadhead is like a crackhead, but for money instead of crack.

Breadhead by 🅱️ U S 3 4 8 March 30, 2022

Stink lines

As seen in illustrations or cartoons: Wavy, vertical lines rising above a person, place or thing. Denotes a foul odor.

"You didn't put enough stink lines on your picture of the teacher."

Stink lines by Athene Airheart March 14, 2004