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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
by EmporioF October 17, 2019
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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.
by August 31, 2010
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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
by KatieValdez September 05, 2018
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A joi porno is a buere instructing you to walk off on her.... face tits ass etc
by Timber Tim February 20, 2018
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Joi is the meaning of β€œ jerk off instruction β€œ it is most likely that it is used we 2 people having sex or sending nudes
β€œ do you wanna do joi right now cuz I’m horny asf”
by yo_its_the_queen_ March 15, 2018
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Jerk Off Instructions. A millennial phenomenon, wherein a selfish generation managed to become even shittier at sex by demanding female partners (mostly paid, always bored) instruct them on how to handle their own feckless anatomy. Nevermind that having been born with a vagina offers limited insight into male self pleasure. And so she performs a kind of thankless one woman show, cheerleading a monosyllabic goon to orgasm.
Sex Worker #1: Can you believe this fucking ding dong requested JOI again?

Sex Worker #2: If I see one more Pro-Domme advertising JOI, I’ll scream. It’s not femdom, it’s emotional labor!
by LydiaFaithfull April 10, 2020
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