side project 

n. A band/group/project that is an alternate to the main band that the artist is working with or known for.

Examples: Team Sleep is a side project of Deftones lead singer Chino Moreno.
Head Automatica is a side project of Glassjaw members Larry Gorman and Daryl Palumbo.
A Perfect Circle was a side project of Tool singer Maynard James Keenan
Zakk Wylde launched his own side project out of Ozzy Ozbourne's band, which later became Black Label Society.
Gorillaz was originally a side project for all of its members, Del Tha Funkee Homosapien, Damon of Blur, and Dan The Automator.

The latest incursion of this is Institute featuring Gavin Rossdale of Bush and the former members of Helmet.

1. And today, he announced that his new side project would feature several members of an alternate band.

side project by Craig B. December 30, 2005

side project 

Getting a little on the side. Cheating on a significant other.

"I've got a girlfriend, but i have a little side project going with Sheila too".

side project by johnny johncakes February 10, 2008

side project 

Getting a little on the side. Cheating on a significant other.

"I've got a girlfriend, but i have a little side project going with Sheila too".

side project by johnny johncakes June 21, 2008

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