Jack-rack

1) Hanging upside-down whilst cracking one off;

2) Someone engaged in 1).

From the sink-holes of Surrey in England.

1) My back was killin', but I fancied a quick spaff, so I did the Jack-rack.

2) Dude, you're such a Jack-rack.

by Tuomas February 21, 2006

Jack rack

Shower

My girlfriend caught me in mid stroke last night when I was in the jack rack, i could've died from embarrassment!

by ALL BIZ February 7, 2018

rack-jack

to steal one's date, escort, etc.
origin: tv show "How I Met Your Mother"

I can't believe he rack-jacked my date!

by smoocharoo October 3, 2006

rack jacked

When you are flirting up a shawty and then a douche bag comes up and prevents you from motor boating her rack. Also a synonym for cock blocked.

Brian was getting major pussy when Britain, a pretentious douche bag, comes right in the middle of their banging and ruins everything for everyone. Brian has officially been rack jacked.

by Hadvar's pimp December 28, 2011

rack jack

to steal a girl from a someone that they are trying to hook up with.

Bob:"Dude, I met this chick at the bar last night, and later I went for a bathroom break. When I came out I saw John making out with her."

Joe:"Aw man, he totally rack jacked you"

by mista biggins September 23, 2008

Rack Jack

The act of masturbating while in your bed (rack) when you're incarcerated

Bunkie: dude. Why is our rack shaking!?

Me: I couldn't stop thinking about my girl so I figured rack jack for a bit

by GOD for short February 3, 2015

rack jack

to steal a girl from a someone that they are trying to hook up with.

"Dude, I met this chick at the bar last night, and later I went for a bathroom break. When I came out I saw John making out with her."

"Aw man, he totally rack jacked you"

by mista biggins September 22, 2008