Top Definition
One who sucks cock so hard that the cum explosion launches them into space. A cockstronaut may be male/female
She sucked my cock so hard I turned her into a cockstronaut.
by bosvark April 22, 2011

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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