When someone jumps in on a joke or a piss-take and trys to add to it or take it over. Normally a sad person who has no life or the usual cunt who just needs attention that othwise he/she would go un-noticed.
1st person: Hey did you hear the one about...etc,etc
Sad lonely cunt: Haha yeh ive heard this (then trys to take over joke or adds to it.
1st person: Oh great, a Joke Jacker, what a cunt
Sad lonely cunt: Haha yeh ive heard this (then trys to take over joke or adds to it.
1st person: Oh great, a Joke Jacker, what a cunt
by kevtucks January 29, 2009
Anyone who goes into a bathroom, picks up some random person's shit they found in the toilet, and runs away with it.
by Bruh.........er February 26, 2015
by Ameena Turnee July 18, 2010
*Fap* *Fap* *Fap* "WHAT THE HELL DUDE" "What?" "WE ARE AT GRANDMA'S FUNERAL" "So?" "YOU ARE BEING A JACKER BOY RIGHT NOW?" "Well sorry, I can't control my urge to splurge"
by Bin Laden's Meaty pussy October 15, 2016
One that partakes in Steady Jacking
by Capt. Load Chucker March 02, 2008
Lil Wayne is a Swagger Jacker, he copies B.I.G., 2Pac, Jay-Z (Jay-Z the most, and he had beef with him lol), His dad, and 2 other rappers, and even an R&B Singer! Best Rapper Alive my ass!
by fuck wayne dick riders August 14, 2009