Top definition
when you put a fish bowl on a very ugly person's head and proceed to fuck them like a gorilla getting ready for a space mission.

Usually involves cuming in the fishbowl while holding them upside down by one leg and spinning them around in a circle
"hey you know Cherry?"
"I gave that bitch a Gorilla Astronaut last night"
by Myn Odu Esp December 30, 2009
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