Canastronaut 

A Canadian astronaut.

Roberta Bondar became the first woman Canastronaut to go into space in 1992.

Canastronaut by Jamieson McGonigle September 1, 2005

Castronaut 

An individual whose sole reason for visiting Cuba is to experience life on this lovely island while Fidel Castro is still in power.

Did you hear how much my cousin paid to visit Cuba?

I know... I know... that freakin' Castronaut still owes me 40 bucks. He tried to pay me with some shit-stained Cohibas!

He probably smuggled them in his poop shoot.

Wouldn't be the first time.

Castronaut by LaRobaNacas January 20, 2008

Castronaut 

Inhabitant of the greatest co-op house the Berkeley Student Cooperative has ever seen, Andres Castro Arms. Those who have struck the perfect balance between having a beautiful house and engaging in all-out pirate insanity.

Davisaur: Who just pranked Davis house?

Castronaut: No idea, must have been Wolf! (with excellent poker face)

~~some moments later~~

Castronaut 1: Good job pranking Davis with us last night, man.

Castronaut 2: You too man. Let's head to The Loth and sauna it up.

Castronaut by golden130 March 29, 2011

Catastronaut

Somebody who is outfitted or launched into a catastrophe; Somebody in a catastrophe as an astronaut would be in space, surrounded by the unknown.

"wow, he's a true catastronaut . I could never work up the guts to have kids"

Catastronaut by Withoutahook;) December 20, 2021