The act of giving a handjob to the person in the passenger seat while driving a car. Thus creating the act of dick shifting.
Joey: Aw dude Tina gave me the perfect dick shift last week. She didn't even crash the car!

Maxx: Lucky, I've only gotten to second base with my girl!
When a man uses his hand to move his penis in the H-Pattern of a manual or "Stick" shifter like he is shifting gears on a car. Often, the man will also use his girlfriend's boobs or vagaina as a steering wheel or clutch pedal.
Person 1: Man, I did the dick shift really hard last night, and her boobs were the perfect steering wheel shape
Person 2: Did you hit the perfect downshift?
Person 1: Yup, and I finished soon after. It was awesome! Will do again, 10/10!
by TriBeCaBoy56 September 9, 2020
The process of absent-mindedly playing with an erect penis. Can also be used as a passive adjective to describe a male persona in which emotional gears tend to be in constant flux and inconsistency, usually causing frustration and bitch fits from their female counterparts. (Mental stick shifting.) Those accused of dick shifting will most likely have high rebound rates coupled with less than intact morals.
*While a drunk dirty skank is giving John Smith a hand job, she starts starring off into space...*

John Smith: Uhh, you want me to just finish? If I wanted to go dick shifting I could have done it myself.

*As an adjective*
Stacy: Ohhhmaahhhgod, he's totally boning her! Didn't you guys just break up...

Jammie: Yea, dude like an hour ago? He's in dick shift mode...
by Ju Ju Bee November 12, 2009
When one masturbates while driving a vehicle
"yo i pulled up to a stop light the other day and this dude was dick shiftin beside me."
by T READY August 21, 2009
The sex position in which the male is laying on his back and the female sits on his stomach. Her feet are on his feet working them like petals while simultaneously working his dick like a manual shifter. The male has the option to then use her breasts as a steering wheel.
Hoe: "I'm thinking we ride the dick shift tonight."
Guy: "sounds great! Let's go through a hilly landscape? There's a lot more shifting and turning involved."
Hoe: "I get tired of shifting and you gonna stretch out my boobs!"
Guy: "you wanna fight bitch!"
by DuRt October 13, 2014
Giving a handjob while wiggling his penis around like a stick shift, while also making engine noises. Vroom vroom.
So me and this other dude were hooking up, and i totes gave him a dick shift.
by Bitchezzzzzzzzzzz November 26, 2016
Purple Dick Shift is usually driven by a kid who always thinks he can beat you at skate but fails every single time for a year straight. Their fetishes usually include Amputee's and Prego women. They supposedly get rated solid 8 out of 10's from girls on the internet. They are usually not right in the head. Their fathers really do not appreciate taking their paddle boats on a lake when they are not legally allowed in a house. And the father is mentally abusive. Their foe's generally include gingers, assholes, fresh kids, or anyone that tries to pork their smokin' hot sister.
"Dude, I want to fuck that girl."

"You'll die dude, thats Wess's Sister!!"

"Woah did you see that truck?, Yea i think that was the purple dick shift."