Astronut 

A person who is nuts about astronomy.

Jesus: "Yes! I received my SkyQuest XX14g GoTo Truss Tube Dobsonian Telescope!"
Daniel: "Astronut!"

Astronut by Todos Valen Verga May 24, 2011

astronut 

A gay loser that has absolutely no friends and gets off by playing DDR every waking moment. Boy what a piece of shit...

Siples: Hey there, wanna play some DDR or maybe i can just suck you off.
Me: No thanks i'm not an astronut.

astronut by Nate Naval May 2, 2005

Astronut 

When you nut so hard it's out of this world

IM GONNA ASTRONUT!!!!!

Astronut by Olem October 5, 2018

Astronut 

Astronut is an astronaut who nuts on space aliens.

Did you see that Astronut? It flooded the galaxy

Astronut by NiggerBob aka bob August 3, 2019

astronut 

nut in space

wow this is good hentai i just astronutted in space

astronut by voidack July 5, 2021

astronut 

having no life and getting no pussy

Siples: Hey im having a lan party tonight, wanna come?
Me: Fuck no, i fucking hate you

astronut by Colin Beckley April 24, 2005

Astronut 

Semen that is suspended in zero-gravity in space.

After a long mission on mars, Greg and Christina decided to get in on.Afterwords, they spent their time dodging the astronut that Greg had created.

Astronut by DVARMARBAR November 2, 2010