JOI 

Often refers to "Jack-off instruction" or "Jerk-off instruction" Involves a girl or a guy "instructing" the audience how and when to stroke and how/when to ejaculate while often teasing or performing other sexual acts. It's mostly mixed with cosplay and other fetishes like foot worship, femdom and BDSM.

Saul: Holy shit dude, I've just busted the biggest load on some shit called JOI, you know of it?
George: Yeah, bro. My older sister used to film JOI when parents kicked her out

JOI by EmporioF October 17, 2019

JOI 

Giving someone instruction on how to jerk off, and or masturbate for pleasure. JOI=jerk off instructions.

Sally gave her boyfriend JOI over the phone during phone sex

JOI by KatieValdez September 5, 2018

JOI 

Acronym for Jerk Off Instructions. A POV porn niche where the porn girls give explicit and detailed instructions on how to jerk off.

Greg found out that he couldn't stroke to a fulfilling orgasm unless he was watching hot girls in JOI porn.

JOI by sarasplayroom.com August 31, 2010

joi 

Jerk Off Instructions

Hey did you seen the new porn hub joi?

joi by ilovejois February 10, 2021

JOI 

Jerk off instruction

A category of a pornographic video featuring a woman giving instructions to someone on how to masturbate.

Yesterday I came to JOI and it was so amazing.

JOI by pzeudonym1 February 9, 2021

joi 

Jesus Online Instantly .....Love Online Listening ...

The joi category just got more entertaining than ever.

joi by Luzir April 15, 2023

Joi 

Jerk off instruction

A joi porno is a buere instructing you to walk off on her.... face tits ass etc

Joi by Timber Tim February 20, 2018