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The act of smacking your girlfriend, and/or violently laying the smackdown on her stupid mouth.
Girlfriend: "Hey, your an idiot with a stupid mouth!"

James/boyfriend "Say that again and I'll lay the smackjack on yo ass!!!"
Smackjack by Russ Diesel October 27, 2011

Stackpack 

A pound of marijuana or other enticing substances for 1000$.
Damn that stackpack was straight mids.
Stackpack by HighLyfeStyle November 7, 2018

Slackback 

A slackback is referring to a day when you are slacking off from dialing and selling. It can also mean a day that you did not post any new sales on Slack.
Becky "I just got a chargeback."
Mandy "Girl, I hear you, but you have seen your slackbacks? Get rid of those days and the chargeback will disappear."
Slackback by Insurance Guru November 9, 2022

Sharkjacking 

An extreme sport of which the object is to masturbate a shark, the greatest achievement possible being an ejaculation by a Great White Shark. One participant ties raw meat onto his/her ankles and swims near the shore to lure in the animal where three others wait. When the shark approaches, the three sleepers wrestle the shark into submission and the "baiter" manually stimulates the shark. Upon ejaculation it is important that the team clears the area as quickly as possible because post-orgasm behavior of sharks is often erratic and the chance of participant injury is increased due to close proximity.

This sport can be played by a team of more than four, but traditional Sharkjacking is done with a team of four.
"Nothing like a game of Sharkjacking in the morning to get the blood flowing, eh boys?" --Chris Kahn of the Starship Enterprise
Sharkjacking by QuadkilleR June 23, 2006
To hit someone in the balls with the back of your hand generating power from a backswing of the stronger arm and finishing with a graceful flick of the wrist...
- From the Ancient Roman word 'sackuswakus' - meaning 'ruptured ballsack'
"you only get a sackwack if no one likes you"
sackwack by Unknown-Infinity August 25, 2006
A very lazy person
Slackjack by mac_munch November 14, 2003
More from Urban Dictionary

Plate of Brown 

A plate of brown consists of foods that have little to no nutritional value, and are typically deep fried. A true plate of brown will also be accompanied by a dark soda.
Wanna go to meal hall & grab a plate of brown?
Plate of Brown by Cheddar Craigson September 18, 2020
Word of the Day on October 22, 2026

Larpenomics

When finance content creators rent out fancy cars and flex cash to seem richer than they really are in order to promote and sell their “get rich quick” courses.
Andrew Tate has mastered the field of larpenomics
Larpenomics by Rbois09 October 21, 2026
Word of the Day on October 21, 2026

Palmela Handerson 

Your hand that you masturbate with.
Girlfriend: What are you going to do for the next week while I'm on holiday?

Boyfriend: Have a visit from Palmela Handerson of course!
Word of the Day on October 20, 2026
x:"Girl your fit chewed today!"
Chewed by iod1o March 30, 2022
Word of the Day on October 19, 2026

Blue Movie 

A pornographic film.

The use of the word "blue" to refer to sexually explicit content was first recorded in Scotland in 1824. "Blue" meant "lewd" because prostitutes dressed in blue gowns.
I found your stash of blue movies under your bed.
Blue Movie by Shayde79 January 20, 2011
Word of the Day on October 18, 2026
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