1 definition by Tune It

Top Definition
A sexual position where the girl is hanging upside with those space boots ,that the astronauts use to sleep and what not, while hanging upside down she is giving you head and you are wearing a space helm and right when you brick you scream at the top of your lungs "blast off!"
Me: Last night i astronaut ed my girlfriend
You: Oh? how was that?
Me: It was terrific, i was wearing a space helmet.
by Tune It October 09, 2007

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