workplace shift-shifter 

An employee who is a master at flexing days and shifts to the point that nobody working with them really knows when the person is going to be at work.

I can’t possibly tell you when that workplace shift-shifter will be back into work!

workplace shift-shifter by Dr Bunnygirl November 23, 2019

Swedish Shifter

In Sweden it is required to learn and test out in a manual transmission car for your license. So Swedes are quite proficient with handling sticks while driving. To receive pleasure while performing vertical stroking hand to genital contact (hand job) while driving is also referred to as a Swedish Shifter.

Dude Sofie gave me a fucking banging Swedish Shifter. I came for a mile on the highway.

Swedish Shifter by 4 Whiskeys of the Apocolypse June 21, 2013

shape shifter 

Someone who morphs their life to match the person they happen to be dating, i.e. adopt the same taste in music, movies, fashions, foods, mannerisms, etc.

My ex was a shape shifter. After two months, it was like I was having sex with myself.

shape shifter by Dr. Kenneth Noisewater February 16, 2005

shit shifter 

A homosexual who engages in shifting shit (anal sex). Same meaning as shit shoveler and poo poker.

"man i'm feeling so homosexual tonight... i'm gonna go shift some shit!"

"watch out for your arse around him, hes a shit shifter"

shit shifter by L. Beck December 16, 2008

Shaft Shifter 

A Person who often gives hand or blow jobs.

Person 1 - See her?

Person 2 - Yeah

Person 1 - She gave Bill a blow job and Ben a handjob!

Person 2 - Really? What a Shaft Shifter!

Person 1 - I Know Right!

Shaft Shifter by 98JoeC November 29, 2012

self-shifter 

Car with automatic transmission

I'd get a Mercedes CLS but its only available as a self-shifter now

self-shifter by towel405 December 25, 2010

Granny Shifter

USA: A person who changes gears in a car slowly
Ireland: A person who french kisses grandmothers

US Citizen: Man that person is such a granny shifter when he drives
Irishman: Why is he kissing grannies and driving?

Granny Shifter by SMCLG September 22, 2022