To perform a Jack Yonce is to stand in the middle of a packed auditorium during ANY and ALL intermissions of a concert for the sole purpose of being seen. This usually happens with the arms folded and that person talking to another person Jack Yoncing, or looking around acting like they are looking for someone specific, when in all reality they are waiting for someone to notice them and wave first.
"You sure do get to see a lot of band directors you dont normally see during the year at All-State Band"
"Yeah, look over there, Tim and Clay are Jack Yoncing like a pro!"
"Yeah, look over there, Tim and Clay are Jack Yoncing like a pro!"
by non-Jack Yoncer September 18, 2012

A sexual act where one individual inserts a thumb into another individual's butthole and then smears the feces across the other person's throat a la Jack the Ripper. Also known as the Sweeney Turd.
Shit dog, we ate a bunch of dim sum and when we went back to the house, I gave her a Jack the Shitter before she could get on that Squatty Potty.
by SpunkyLiesl August 24, 2017

Drake: man that girl screamed when she tried juice jacking me but didn't realize I poured hot sauce in there.
by m3rc10us January 31, 2022

When a guy is about to finish jacking off and a female gets in the way by either walking in or interrupting, but instead of leaving in an embarrassed way, she comes over and holds his dick aggressively.
SJAC: So you had some fun time home alone last night?
Zak: Oh mate the girl from next door came in while I was at it, and it was a bit of a Jack-Holdsworth situation :(
Zak: Oh mate the girl from next door came in while I was at it, and it was a bit of a Jack-Holdsworth situation :(
by SJAC August 18, 2017

by yessir.com.epic September 14, 2020

When you finger a girl's kutch and find out she's not circumcised. To be more specific, the outer fat tissue of a female vaginal wall.
by asdf66667878 December 20, 2014

A form of being attacked or groped. You may find a jack attacker under your bed. Being jack attacked isn’t always a bad thing for some individuals.
by Safety_tips October 21, 2023
