a sexual position for gay guys. One man sticks his middle finger up the other mans ass right as he cumms
If the man says he has a "Rocket Finger" then he is gay. Sometimes a guy will have a flame tattoo on his middle finger, this is the mark of the Rocket Finger
by skratchez October 9, 2008
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When your girlfriend does a countdown to lift off in your brown star.
Keith told me Sally knows how to finger rocket a fella.
by Benecio Del Boro. February 1, 2017
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