sideage 

the act of fooling around in a committed relationship

Hey, I think he is catching sideage from that stray at the bar.

Dude, I caught some sideage last night.

sideage by johnny ohio January 7, 2011

Double SidedTape 

When you are describing a bisexual person in a "slang" or offensive way

So you're a Double SidedTape

Double SidedTape by LukePaul Sammut January 19, 2018

Sidesteper 

A "Sidesteper" moves to the side, not behind your back as does a "Backstaber. A sidesteper is more smooth; condescending, over confident. Acts like your friend but talk shit... some sidewayz shit, right next to you or to your mutual friends. Not when you walk away; acting like they didn't.

I just got sidesteped by that mother fucker!
I almost feel bad for the dumb bitch but shes a sidesteper anyway. She doesn't give a fuck really; She tried to act like she doesnt know what's up. It's not really a secret; really?
I was trying to sidestep on that twenty but I seen him just now. I would have got called out on that anyway.

Sidesteper by KandyKTrenton January 11, 2021

Sidestream 

Not unknown, but not widely known.

Bobby: Yves Tumor is so underground.
David: He has hundreds of thousands of plays on youtube, he's not underground.
Deshaun: He's sidestream.

Sidestream by rickeybobby February 18, 2021

Sistager

It derives from "sister" and "manager". It refers to a sister who servers as a manager to her siblings.

A sistager will tell you exactly what to wear and how to speak.
My sistager answers calls on my behalf.

Sistager by Lebanesegov September 9, 2022

sidestream 

To watch episodes of a television show without the person you swore you'd watch 'em with. A different kind of virtual cheatin'.

I knew that dick wasn't the one when I caught him sidestreaming Breaking Bad. That fool promised me he'd wait 'til I got off work, but I heard Jesse Pinkman before I stepped through the door.

sidestream by mw_writes September 26, 2014

sidestreet sammy 

Someone who always tries to find a quicker way to a destination by taking back roads or streets.

"What took you so long to get here?" "Oh, John pulled another sidestreet sammy on us."

sidestreet sammy by bohring April 26, 2009