Flashy jack 

A fat nipple dweep who likes getting cheated on

Guy 1: hi I'm flashy jack
Guy 2: can I fuck your mrs

Guy1: of course buddy

Guy 2: oh shit, I already hit that
Guy 3: Same
Guy 4: same
Guy 5: same

Flashy jack by Flashyjack18 February 2, 2024

Flashy-Flashy Jacket 

A nickname for a fluorescent jacket

ex: I saw a guy on bike at night and he was wearing a flashy-flashy jacket

Flashy-Flashy Jacket by Sam the person who really wants to use her name April 18, 2008

Jack Flash

A street term for a special type of medical heroin... if u hav ever had heroin you know why its called that!!!

Zack: Yo man after i broke my arm when i got fucking slammed into the ground the hospital gave me some Jack Flash i am gonna try to get some extra so i can sell it

Miano: YA!!! then we can buy weeeeed!!!!

Jack Flash by Ross The Great April 21, 2007

jumpin jack flash 

This move requires the active participation of you, a camera, one unconscious individual, and a damned good friend. Pull your pants down to your ankles and position your ass hole about 6 inches away from the unconscious person’s face. Then give them a sharp smack in the face (they have to be sleeping on their back for this to work). When he wakes and raises his head in disorientation, your friend snaps a quick Polaroid of him tossing your salad. Definitely recommended when the victim has already spent time in prison as a prom queen

jumpin jack flash by wanksta July 31, 2003

jack flash

member of the cushty air kids, known for speed and power

there goes jack flash

jack flash by watson and jackson5 June 27, 2006

Jumping Jack Flash 

The woman performs oral sex on the man, while he jumps up and down taking pictures.

Mike: Hey Mark! I heard Joe gave that old woman the jumping jack flash last night!

Jumping Jack Flash by Rellik Venom October 13, 2006

flashjack 

A flashback jack-off session. Thinking about a previous sexual encounter whilst masturbating.

Mike: I'm gonna go jack off to that hot chick I had sex with last weekend.
Steve: Man I love a good flashjack.

flashjack by kevdogg85 January 20, 2009