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The excruciatingly painful occurrence when a male, with a saggy, heavy hanging, scrotum inadvertently gets the ball sack tucked under the taint and buttocks and sits on the testicles and sandwiches them between the body and the seat surface.

One can easily recognize when a male is experiencing a Sandwich Bag by way of facial expression. It is, without question, the most breath removing, eye squinting, mouth scowling look a male face can show. Most often accompanied with the use of whimper induced cursing.
Carl finally resorted to having to wear tighty whities instead of going commando. His heavy hanging ball sack and low dangling testicles made him prone to having a Sandwich Bag every time he sat down.
by Ben Dribblin May 13, 2015
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