1) A sexual term used to describe the nut sack being completely contained inside ones mouth creating an airtaight seal. (And great pleasure)

2) A defensive, derogatory, and somewhat threatening response used to impress your guy friends when your woman is not around and you want to talk shit to her.
During an awesome blowjob last night, my girl sucked up both of my balls at once and gave me a sack sandwich.

"Hey Chris...I heard your girl is pissed off because you went to the club last night without her. She said she was going to break up with you."

"Man fuck her. When I get home tonight I am going to serve her up a sack sandwich. Then we'll see what's up!"
by Mr. North April 18, 2009
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the act of smacking your ball sack wrapped around bread and peanut butter ( its optional to add jelly) in the females face while having sex
"I hit jieny with my ball sack sandwich in the face and she shit her self because she was allergic to peanut butter"
by Raphaelcamdoug March 30, 2008
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the act of smacking a bitch in the face with your testicles(balls) warped in bread and peanut butter (its optinal to add jelly)
i smacked suzie with a ball sack sandwich and she shit her self because she was allergic to peabut butter.
by Cam J, Doug M, Raphael M March 30, 2008
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