Crossing the Rubicon 

Crossing the Point of No Return. Named after Julius Cesar, who according to lore crossed said river into Rome, effectively declaring war.

I was Crossing the Rubicon the moment I thought he was too stupid to notice that I slept with his Girlfriend. He beat my ass so hard that to this day I twitch every time I hear the name Sasha.

Who's Sasha?

*twitch*

Crossing the Rubicon by wildcard9 March 7, 2010

Crossing the Rubicock 

A variation of the term 'Crossing the Rubicon'. A phrase where a woman had ventured down the path of sleeping around, having numerous hook up sex with multiple partners, cheating on spouses, having children out of wedlock, committing adultery, initiating divorces, accumulating STDs and the like, and thus had sealed herself from any chance of ever returning to her previous identity of being a chaste female with a good upbringing and life choices that would attract men looking for a serious relationship.

Sally is crossing the Rubicock by dumping her boyfriend of 5 years and sleeping around with several other men while she was on campus. Now after graduation she is trying to get back to her ex claiming she is not having fun anymore of doing that, to no avail.

Crossing the Rubicock by alam101 November 22, 2019

Cheeks 

An Irish phrase meaning shit, derived from ass
(Not to be confused with the literal description of one's buttocks)

"Did you hear the song Aylek$ dropped?"
"Hardly. Her music is absolute cheeks."

"My boyfriend say LaFlame is cheeks."
"Tell your boyfriend I said it's his mixtape that's cheeks."

Cheeks by thecartisan April 26, 2020

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

schmegegge 

Yiddish slang word meaning bullshit, baloney, hogwash, nonsense, crock of shit or hot air.

I don't buy the schmegegge about Morty sleeping with Moira.
His version of the story was pure schmegegge.
The whole schmegegge was made up to get Liz a little bit of attention.

schmegegge by budsbabe February 1, 2008