RackSack 

The condition a male is forcefully given when having been struck in the testicles. This condition is known to cause severe watering of the eyes, temporary swelling of the testicles, extreme cases of Sailor Mouth, and will cause the one stricken with Racksack to assume the fetal position, most likely with their hands protecting their testicles from further harm.

Ouch, bro, that nutshot must've given you some serious Racksack.

RackSack by Sol Reaper February 27, 2011

Rackjack 

To make it with a girl someone else was just hitting on.

Ted's Dad was Barney's wingman, but when Barney couldn't seal the deal that night, Ted's Dad rackjacked him.

Rackjack by Declow October 3, 2006

rackjack 

To steal a girl some other guy was running game on

Mike totally rackjacked that sorority girl from me last night

rackjack by JohnMoor November 3, 2006

rucksack 

german word for "backpack".
Also used as a slang term for
"testicles"

I have all my stuff in my rucksack.
I am going to kick someone in his rucksack.

rucksack by ederkeg May 24, 2004

Tinker's rucksack 

A term for the scrotum which reflects the fact that they are an unattractive appendage not unlike a tatty backpack for the possessions belonging to a more impoverished member of society

He seems to have a bit of an itch on his tinker's rucksack

Tinker's rucksack by Adbase December 28, 2013

rackback 

When a sweaty fat fuck has folds of fat on their back that resemble saggy granny titties.

"that fat slut was walking around with her shirt wedged in her rackback.

rackback by pete burns September 30, 2007

rackjack 

Stealing a perfectly nice set of breasts right out from under your friend.

I would have scored with that busty blonde last night but I got rackjacked by Joe.

rackjack by MJ Adams October 3, 2006