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.

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Obama Sack

A clear plastic bag, full on coins.
Named after Obama, because they are both full of change.

John - I don't want this change.
Zack - Shit, I'll take it.
John - wtf are you gonna do with 12 cents?
Zack - I'll throw it with the rest of my change into my obama sack.

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piss sack

The layer of fat or roll under the female belly button just above the good stuff.

Look at the piss sack on her?

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Coffee sack

The well-endowed genetalia of a sexy Hispanic man.

Hoe 1: Wait, your Fcuking Pedro?
Hoe 2: Danm straight! He's got one hell of a coffee sack!

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Sack Shadow

The untanned spot left on your inner thigh from where you testicles (aka ball sack, balls, sac, bag etc...) were lying when tanning or nude sun bathing.

"I kept moving my balls around while tanning to prevent sack shadow."

"I hate when I see him in briefs, his sack shadow is obvious."

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Smack the Sack

To masturbate at such a high speed that your hand smacks your scrotum and makes a wet smacking noise.

Yea, I used to smack the sack, but then it got to loud and my parents heard.

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Condom sack

Used as an insult for when someone is being more then a douche. Condoms have cum inside them after being used, thus making it more disgusting and just gross. A large sack of them is a lot worse then a douche.

You're such a condom sack man! Just go and punch him in the face!

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