Define Sack Back Meaning

Sack Back
When one man places his sack on another man's back. Used in the penis showing game

Wacko:(standing shirtless working out)I love working out
Ed: (standing naked)I love my sack on people's backs
(jumps on Wacko's back, and his sack is on Wacko's back, thus giving him sack back)
Wacko: God damn it Ed!
Ed: Gotchya Wacko!
(Proceeds to kick Wacko in the ass twice)
By Marge
Tuck Your Sack Back
Grabbing your package and putting it in upwards of your butt cheeks.

Do Not tuck your sack back, we are Powerhouse!
By Alessandra
Sack The Back
To penetrate an anus. Anal sex. Sack to have sex and back as in the behind.

Man that girl looks kinky, i bet she'd let me sack the backQ
By Aeriel
Sack To Back
A long lick starting at the sack and continuing through the ass which ends at the middle back

Hey Timmy if you aren't home by 9:00 your finna get a sack to back
By Tiena
Back-sack
Back Sack is the backside of ones scrotum.

A: Yo dog, I can't believe you just ball-tapped me from behind, you got all back-sack.
B: Ew, check out that old guy's back-sack hanging out of his pants.
C: Check out Katz's shaved back-sack.
D: Mom, Jacob put his back-sack on my face.
By Karilynn
Sack In The Back
The act of a male tucking his penis and balls between his legs (in a Buffalo Bill type style) while turning around, bending over and exposing his ass with bulging sack to passersby.

As my roommate Jim returned from the shower, he tried to gross me out by performing his "sack in the back" routine in my presence.
By Conni
Back Sack

the back of your nut sack gets hit and your like ahh my back sack.
By Vale
Back Sack
an unfourtunate birth defect where instead of having a nutsack next to your tallywacker, you have one on your back

I fell off my bike and my back sack exploded
By Tonye
Sack To Back Or Sac To Back
Sack to back is the term used when two males ride a motorcycle or scooter together.
Also referred to as "Butts to Nuts"

Those guys are riding "Sack to Back or Sac to Back"
By Tate
Sack In The Back
When a person places their scrotum between the ass cheeks of another.

Bro 1: Hey bro, can put the sack in the back
Bro 2: I would love your scrote between my cheeks!
By Jessica