When a person is born with the parts to form a butt (butt cheeks) but no flesh ever properly forms in it, so that the prson doesn't have the natural roundness of a butt and are therefore forced to sit on the extension of their thighs for lack of a natural butt. Or in simpler terms- lack of butt meat.
Hold on, is that Crystals's thighs or just her vestigial buttsack that's creeping from the top of her jeans when she bends over?
by Zoraya M May 19, 2008
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buttsock
• buttsack
• buttsecks
• buttlock
• Buttock
• buttsucker
• buttcock
• buttpocket
• buttseckz
• Buttlocker
by Drop_D May 8, 2007
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Get the buttrock goa mug.A word with no true definition as a noun, but is generally used as a word to throw people off when a question is asked that the person doesn't want to answer and/or might be dangerous to answer.
Woman- "Do these pants make me look fat?"
Man- "Buttsack."
Woman- "What?"
Man- "Buttsack."
Woman- "...What were we talking about, again?"
OR
Girlfriend- "Do you love me?"
Boyfriend- "Buttsack."
Bystander- "...Did he just say 'buttsack'?!"
Man- "Buttsack."
Woman- "What?"
Man- "Buttsack."
Woman- "...What were we talking about, again?"
OR
Girlfriend- "Do you love me?"
Boyfriend- "Buttsack."
Bystander- "...Did he just say 'buttsack'?!"
by 42Geek July 31, 2010
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