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when a guy's dick curls upwards and resembles a rocket.
"dude eamonn has a rocket dick!"
"really? thats gay."
by C0N C0N December 18, 2008
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*sees ginger*

"ah yes, a rocket dick

also known in the Little Einsteins theme song: "We're going on a trip, in our favorite rocketdick"
by ramona flowers17 May 27, 2015
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