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{Jack and John staring at a giant cleavage}

Joe: damn..! look at that cleavage! Never seen something that huge,.
John: Yeah I'm pretty sure that'll open up to be a silicone valley..
by jt95 October 08, 2014
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The cleavage that is a result of breast implants and poor choices of blouses.
Her cleavage was referred to as her β€˜Silicone Valley’... because of its β€˜inception’ created after breast augmentation.
by Major Thomas February 08, 2018
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