Jackpin 

A boy who roles with the cool kids but is actually hated by every single one in that group, he looks like a sausage and he will always be single , he masturbates over sexy posters every night, if you know a jack you'll probably be stalked by him so watch your back buddy .

Jackpin
He masturbates over sexy posters.

Jackpin by That nice guy. August 31, 2018

Twitter Jacking 

"Twitter Jacking" is when you copy someones tweet instead of re-tweeting, therefore, not giving them the credit.

If it happens to you, then you have been "Twitter Jacked".

I hate 123starblizzy, I'm going "Twitter Jacking" and copying his tweet, people will definitely think it came from me. Also known as Twacking.

Twitter Jacking by Athalonius November 4, 2011

mommy jacking

When a mother interferes with any conversation or activity to boast about herself as a mother, or of her children

Don't invite Karen, she is mommy jacking every conversation at girls' night. Nobody cares if little unvaccinated Julie can count to ten in Mandarin backwards while juggling non-GMO, free-range, organic fruits

mommy jacking by Willem Dafoes Junk May 25, 2018

Jackin 

It’s slang for claiming. It’s a New York word. It can also be used in a way as like what you believe or think.

Him: I’m Jackin that he took my headphones
Her: You don’t know for sure so don’t Jack that

Jackin by Jayybabyyy February 10, 2020

Jacking it in San Diego

The act of publicly masturbating while on a street corner in San Diego, usually after having led a social justice campaign, and gone nuts from the pressure. The term was coined by South Park which satirized the founder of Invisible Children, Jason Russell, for engaging in the aforementioned act, which pretty much destroyed any momentum his movment, Kony 2012, had left.

Kyle: "Well when you're naked and jacking it in San Diego, don't say I didn't warn you."

Stan: "What?!"...

Barber shop trio: "Jackin' it, jackin' it, jack-ity jack, spankin' it, slappin' it, spank-ity slap!"...

Mayor: "...why not try jacking it on one of our city streets? San Diego, cum, take a load off."

Jacking it in San Diego by MAV28 March 12, 2013

jacking the beanstalk 

having a long, slow wank

'He's been in there for hours Cuthbert, i reckon he's jacking the beanstalk again!'

jacking the beanstalk by TCourtzone January 19, 2008

jackpipe 

To fuck very hard. A combination of the words "jackhammer" and "piped"

I picked a girl up from the club last night, took her back to my place, and jackpiped her until the early morning hours.

jackpipe by skullnbones May 20, 2017