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-associated with an intense sensation (usually due to sense of touch) where one experiences an extremely pleasant feeling to the point where involuntary contraction of muscles occur.

-event that make someone buckle his knees
..the way she ran her hands down my hips was an absolute knee buckler
by TW IN May 30, 2018
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Cathy used those great DSL'S to give me a "knee buckler" last night.
by Eman3737 November 29, 2004
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