Jackslap 

a common term used by military firefighters, meaning to "dust of the bitch slap" or to "Slap you with the back of one's hand". This is commonly used from one soldier to another if someone says or does something stupid, pushes just the right buttons, or irritates another soldier.

"Soldier, I will jackslap the cowboy piss out of you if I don't get my goddamn newspaper back!"

Jackslap by Bryan H. September 13, 2006

jackslap 

v. - a severe and often extremely painful beating. Thus usually used only for intimidation purposes

ie.. "if you don't stop that shit I'm gonna jackslap you like a monkey"

jackslap by Zman July 18, 2004

Jackslap 

The act of shoving your index and middle fingers into another persons nostrils, pulling upwards while using your other hand to smack the stretched out nose.

She dumped me after I jackslapped her.

Jackslap by C&M112509 December 2, 2010

Jackslap 

The act of someone hitting another person in the face with a tire iron.

Person 1: Dude? Why the hell did you jackslap me?

Person 2: You pissed me off!

Jackslap by Pillowpants9 October 21, 2010

Kentucky jackslap

A Kentucky Jackslap is when oneself ejaculates into their dominant hand and walks down the street and then slaps an unsuspecting victim, thus completing the Kentucky Jackslap.

I never knew that my sperm had more than one use until I came to know the Kentucky Jackslap.

Kentucky jackslap by Apple fucker 8642 June 6, 2017

Jacksnap 

A person that doesn't understand jack, yet, still makes snap judgements with the narcissistic belief they are the smartest person in the room and know whats best for everyone.

Anarchists are such jacksnaps that think they can fix the world but live in their mom's basement.

Jacksnap by DirtiestD November 18, 2014

JacksGap

AKA Jack Harries, an attractive Englsih YouTuber who makes videos with his twin brohter Finn

Person: Do you watch JacksGap
Other person: Yeah but I like Finn
Person: Which one is Finn?
Other person: I don't know

JacksGap by natkatlat November 3, 2013