Masstronaut 

the total combined mass of an astronaut in any given place at any given time.

we figured the masstronaut was about 59lbs. on the moon.

Masstronaut by MurphyT569 October 22, 2008

Asstronaut

Male who has a particular penchant for anal sex or one who is known for being skilled in this dark art. The Asstronaut is said to seek deep space, making it a clever play on words.

Toby is famed for being an Asstronaut and likes nothing more than probing your anus.

Asstronaut by Mel Carroll May 23, 2008

Asstronaut

A term describing a person who with minimal effort gets huge amounts of ass. The term was first used by negro rapper "Dr. Dre" in the song "Keep Their Heads Ringin'".

"Treyshon is a fucking asstronaut! Did you se those bitchis he brought home yesterday?" "i get plenty of ass, call me an asstronaut"

Asstronaut by Mr. Arafat July 2, 2011

Sasstronaut 

A person who is being exceptionally sassy, and maybe beginning to get an attitude but you don't want to hit in the face because they're your friend.

Friend A is being bitchy. Friend B, "dude, why are you being such a sasstronaut?"

Sasstronaut by ecg87 November 17, 2011

asstronaut

A gay who explores places where no man has been before.

Jared Mezzochi is an asstronaut

asstronaut by Andrei May 15, 2004

asstronaut

A homosexual

See that guy? what an asstronaut!

asstronaut by Anonymous July 14, 2003

Sasstronaut 

noun. A female naturally skilled and trained during childhood in the art of being an unreasonably sassy drama queen and self-entitled. Sasstronauts will often evade responsibility for their own dramatic actions that were caused by their unreasonable sassiness.

Alysin pissed off every one of her coworkers by being an unbearably cunty sasstronaut.

Sasstronaut by King Bowl April 5, 2013