2 definitions by vivians_hot

1
When a guy cant stop mastubating, or having homosexual sex.
Lenny cant control his slappybag.
by vivians_hot December 14, 2006
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2
When a male starts to slap his testicular sack into any person place or thing, he is known as a "slappybag."
Lennard is a slappybag.
by vivians_hot December 14, 2006
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